i have the same issue with my recently purchased kawasaki brute force 750 atv. Seller told me it ran great and had the carb cleaned and re jetted by a local shop just before he put the bike in storage for the winter season. When i showed up to buy it, it spitted and sputtered like crazy and would not stay running. After i rode it around a little bit i raised the choke level up about 15% and it seemed to run fine then...the idle was great and no more sputtering or spitting. Seller was shocked and told me it ran perfectly before he stored it for the winter. I went ahead and bought it anyways knowing it was fixable no matter what and he gave me a killer price on it so I was still stoked to buy it. I so far am just riding it with the choke partially open and it runs fine so far that way at least.
colourtune plugs are handy as you can check the color of the flame which should be Bunsen blue after the choke is pulled in. there is a mixture screw under the carb usually which you can screw out a turn to get more fuel...might be worth a try. As long as the jets are the correct ones and the float heights are correct then with a clean carb the bike should run well.
im going to try this today. i have an old 1991 honda 300 fourtrax that seems to carbon plugs almost instantly. the bike idles great and can putt around in SL no problem, but as soon as your on the throttle to get through your gears, its as if the mid range power is completely gone it struggles to accelerate, and it starts to come back in to normal in the high end RPM. its causing jerky acceleration through gears and when finding your cruising speed. ive taken apart the carb and cleaned the jets, along with replaced the air and oil filters, plug and oil. somewhat fixes the problem but reverts back (my guess once the plug fouls) im starting to think the float may need to be adjusted now, thanks for the new lead!
Just got a 05 Yamaha bruin 350 in excellent condition. After about two weeks of riding, it started sputtering and bogging out when I give it gas. Took carb apart to clean and it was like brand new inside, but I cleaned anyway and replaced sparkplug. Put carb back on and same problem. If I slowly give it gas it'll slowly pick up rpms and fly but as soon as I decrease gas and begin to increase again I get the same sputtering like it's starving for gas or getting to much. Like I said, this machine hasn't been taken care of very well and has less than 1000 miles. It also will backfire a little bit every once in a while after I get off gas at high speeds. Need help
Being a 2 stroke the crankshaft seals may have dried out over time and is coursing an air leak around the crank. Check all gaskets and crankshaft seals as you don't need to hole a piston with a lean fuel air mixture. Take care and good luck 👍
Best explanation yet. 2 out of four are doing this. I'm on it. Thanks. The 99 honda 300, never a problem. The rubicon 472, both have this issue. Was puzzling. Will follow.
Fantastic man I think you've just reminded me to clean the little holes on the jets I so got lazy and just changed the jets didn't bother to look in the little holes thanks for real man , peace
I could not figure it out. My new motorcycle only has 200 miles on it. Came with a carburetor I have to work to get the screws off the bowl. No biggie. Yet it puzzled my on what it was doing. Did not make sense. Now it does. So, I'm going to do exactly what you suggest. I will see. If works, you just saved me money and a big headache. Thanks for your help.
Great video. I succeeded in rebuilding both carbs on my 1997 Polaris 500 snowmobile thanks to this video. Reassembled carbs on machine and fired it up. The mag cylinder is not drawing in the fuel, thus the mag cylinder is not firing. Suggestions?
Is there a number that we can reach you on your telephone number I'm having the same problem when you just made that video my scooter is spotting and spitting it's it's it's starts but it doesn't it doesn't run for a while it's turns off quickly
similar issue with my royal Enfield 350cc. Uses a 29mm carb, the bike tends to start dying when it's running with load at a constant throttle, say through the mid-range RPMs (2000- 3500 rpm), but post that 3500 rpm till the redline at 5500 it works fine when throttle position is constant there.
Really liked this video. Thanks Thomas! I'm new to working on small motors and eager to learn. Learned alot. Thank you. This is the first of your videos. I've subscribed and will be checking more of your videos. I'm here because, guess what? My new to me, used ATV, is having carb issues. So again, thanks
Iva a Kawasaki KLF 300 that won’t start !! It was originally just getting slower and slower to start, so I stripped carb and replaced all needles and jets etc , I found someone before me at left in too many rubber rings and washer on pilot air screw jet , but now after re-assemble it won’t fire at all ?? Just seems to back fire through carb a little bit , I’ve good fuel and I have spark , I’ve tried spraying into carb while cranking to see but still no fire ????
This was probrably one of the best videos about small carbs thank you so much I dont think Anyone could have explained that any better video was straight to the point.. Ive been struggling with a small carb. First it was leaking out the over flow then it was backfiring thru the air intake now its bogging down with throttle doesnt die starts right up but bogs way down driving me crazy but im pretty sure after dozens of videos this is the video i needed to see. Will let you know thanks again
Got a 2006 883 sportster. Would cut out on low speed crack pop ....everything they are known for. CV carb. I assumed pilot was too lean from factory (42) so I went thru process after complete cleaning of carb, replacing accelerator pump diaphragm and orings, gasket, of trying multiple new bigger pilots. 45, 46, 48. No change. I got a new 42 pilot, put it in. Problem now is upon throttling, it bogs n dies. If I stay off throttle itll idle all day, but soon as throttle is given, it bogs. Tried adjusting air mix, 2.5 turns out from lightly seated and 1/8th turn in from there. Gradually closing but No change. Bike has drag pipes. No baffles ran before that way just would cut out under 3000 rpms so I set out to fix problem, lol , now I can't use throttle at all it dies. I've adjusted idle as well with no luck. Black sooty smoke out pipes upon throttling, or it spits from carb airbox side of throat. Plugs fouling bad. Changed plugs, put bike back stock, 42 pilot, 175 main...float been adjusted by spec...idk what else to try. Starts without choke ez. Soon as you throttle it it cuts out bogs n dies...all this just to try to stop the low speed popping n cracking...😎. Guess I should have left it alone but I was trying to improve it. With a bigger pilot. But that failed. I believe its overly rich...from the black smoke out pipes...and fouling of plugs. About the only thing I haven't tried is shimming the needle, which I understand only richins mix so I have not done that...any ideas? Bike only has 22000 miles on it. Screaming eagle stage 1 breather....drag pipes, everything, stock....rgm883@gmail.com. appreciate any ideas. Float valve is working, accelerator pump works, no tears or pin holes in slide diaphragm....all channels blown out with light psi compressed air after complete rebuild and clean....rebuilt completely totally dry n clean....I'm lost...help? I do my own wrenching, dealerships take you to the bank even when it's a 20$ deal they take you for 300$ this has to be something simple....emulsion tube is stock, emulsion tube jet is installed correctly. ...idk...thx for suggestions...my email is above.
I have a taotao 125cc Dirtbike. The carb it doesn’t run great with unless it’s in higher rpm. Whenever it is idling I have to feather the throttle to build the rpm before going. If I just hit the throttle from idle it bogs down and dies. It’s super annoying to ride because of this. Also the piston was on wrong with the intake and exhaust sides flipped since I fixed that it does run better but still is the same bogging problem. I’ve adjusted the carb so many times but to adjust the air fuel screw I have to take it off and it’s annoying taking off over and over
I have a Farmall 100 tractor that fires up with no problem. Then it starts sputtering and puffing smoke out the exhaust like it's flooding or choking. After doing this for several minutes, the engine will finally die. But, I can pull the starter and it will immediately fire back up with no hesitation before repeating the same issues as before. When it is sputtering, the rod leading from the carburetor will move back and forth instead of staying stationary like you would expect. Do you have any ideas as to what may be the cause of my issues? I inherited the tractor from my late grandfather and have some mechanical experience, but am in no way a professional. Any advice you could provide would be greatly appreciated!
On my o7 Yamaha golf cart I pulled the carb to clean it... just regular maintenance now it won’t run without the choke on ive sprayed around the carb for vacuum leaks and it don’t have any the only thing I could not get out was the emulsion tube under or I guess above the main jet
Omg,,, I just had my 1982 Yamaha IT175 out today. I’ve had the carb apart a number of times and cleaned but did not take notice of those small holes, you may have answered my “bogging” concern. Additionally, that tube I believe is restricted because I can not blow air through it. Thanks for the information, I will try your suggestions.
So I just bought on Amazon a 49cc 2 stroke racing motor that has a intake kinda like that one and I belive gravity feed fuel cus I need to flip the bottle to get fuel. My thing is I wasn't going hard on the throttle to brake it in and finally was able to open run like 75 of the throttle. I see that it's not taking much fuel while running high speed and bogs out kinda died till kinda giving gas then turns on. Only runs in low or mid speed utility not high for more then few mins
I have a 2008 Suzuki DRZ 125 and I can usually kick it over. Though when I turn the throttle it does not return to idle but it keeps going up or staying if what you just turned the throttle could you help me of what is going on?
Me and my dad are working on a clients Yamaha TT-r230. He had let it sit for number of years. We had put a lot of new parts on it and still can’t get low rpm’s. Starts and idles perfect and all the power at top end. Just no low end power just stutters and wants to stall. We flushed the tank servile times. We all so put a new pepcock, fuel line, carburetor and battery on it. We have tried tuning the low end jet and nothing makes a difference but if we pull the choke 1/8 the way out. It will run like a dream. Can any one help us and shed some light for us please? Thank your guys.
Hi . Thomas thank you for the info, i have an issue with 2006 ktm 50sx with stock carb and jet Dellorto carb brand. cleaned carb. as you said. 4,x. it boggs down at full throttle bike on stand. 60/1 fuel ratio. im in california 40 miinutes inland from beack. so u get idea on elevation. i appreciate ur help
I have a problem with the kawasaki klf250 carburetor dismantled, cleaned, set according to the instructions, fires ok, drives ok, the problem shoots from the exhaust when releasing the gas, the candle has a metal color
Is it normal for the carb floats to be stuck in the bowl? Is this the design? Never seen that before. I have a 1982 yz125j that keeps flooding the cylinder and plug. Can you make a video on that cause and fix?
Awesome video! Iam having problems with my yamaha wolverine and it's spitting and sputtering like it's starving for fuel, i bought this bike brand new and this is the first problem I've ever had with it.
Man runs perfect in every gear when you put it in reverse it don't have no power it just spits and sputters will not go backwards I also bought a brand spanking new carburetor and put it on it and it run perfect but like I said when you put it in reverse it just spits its better it won't go backwards unless you're on flat ground
Question, I just bought a 1994 Kawasaki Bayou 220 and the starter sounds horrible. I replace the starter with a brand new one off of Amazon and the starter sounds exactly the same and it’s almost like a grinding sputtering noise and it sounds like the starters not getting enough power to crank the four wheeler. Any ideas?
I have a problem with this tool, it's a KTM 250 2T The tool has not been used for almost a year This week I found time to take care of it, I did a fuel-oil change, I cleaned the filter plug, everything, finally I tried to start it, but the car could not start. It only started with carburetor spray and shut off straight away From that I understood that the carburetor needed to be cleaned and that's how I did it. Now the problem is different, the motorcycle drives straight up to very, very high turns I played with the air-fuel screw but unfortunately it didn't help. Is there a situation where the problem is different? Something in the carburetor maybe? need help please
How about cub cadet that is like fuel injected and does not really have the old fashion carburetor . Motor was surging but now it won’t turn on. Any suggestions?
I have a KTM 2017 xc300 i cleaned my carb but it hadn't stop spluttering idk what else can I do. I'm going to chek the float needle. I already cleaned the jets and also the idle jet. I completely removed them and poke them like you did in the video. Please help
I'm having this problem, but it's a new carburetor, it was my first motor kit and I bought a zeda 80 when it was in stock, so I started a bike build for my son with my first motor similar to the PK 80 on a occ chopper bike everything is offset to the left cause of the wide bike tire, well my issue doesn't seem to be the carburetor, and being that the exhaust system is a flex tube pipe could that be a problem why it spitting and sputtering.
Hi Thomas, I have some questions I'd like an answer for. I have 1995 summit 670 with vm40 mikuni carb, everything is squeaky clean almost spotless in there everything new except for needle jet and needle. (needle valve, seat, main jet pilot jet, gaskets) and had it set up to factory such as round slide opening air screw and idle screw float arm adjusted to 19.6mm bottom of the arm to face of carb where gasket sits. carb was keep flooding I tried to have float arm to 20.5mm didn'tdo it. flipped the arm set it to the height still flooding. I took the slide out and excessive amount of fuel was coming out from main jet( throat I think), thru jet needle tube. I blocked the jet with needle and tried again and breather hole and such was puking out fuel. why would it be keep flooding? and its happening to both of carb and I dont know if floats will go out at same time
My Kawasaki bayou is revving almost wide open. When I choke... It gets higher. New carb I can't find anywhere that's sucking air in. Any ideas? Please help!!!! Thanks in advance
Did that in a PHBG 21mm.. still spits. I noticed that by adjusting the air mix screw it made it a little better, but still spits at WOT. Tried many different settings turning the screws 1/4 at a time but still cant get it right.. i had to lean it a bit moving the needle ring up as the engine was constantly flooding. Thats when the spitting started... should i get the needle ring back in the middle and change to smaller jets?? Main jet 92 idle get 50 Gilera runner 70cc. thanks in advance
Helloe Thomas. got a Raptor 350. (little story) bought it in bad shape. but it started and idled perfectly but i couldnt rev it (died) found the choke was corroded stuck so i got it loose and changed the sparkplug. wouldnt start. cleaned the carb, now it backfires ALOT(when revving too). it wont idle nice, either i rev it to keep it running or use the choke so i idles high. and it pops through the intake now. seems like everything became a mess with it. do you know what could be wrong here?
I took apart my carburetor yesterday and when putting it back together I found a gold screw and didn’t know where it belonged 🤦♂️ now I know 😂. Gotta take back apart
I just bought a 1997 formula z Ski-Doo I started up it runs good for 10 seconds and then it starts spitting and sputtering I got a feather the gas and then it backfires and shuts off is that a carburetor problem they need to be cleaned also and it is that the first place I start or should I get new plugs they're pretty new check the gap?? Can you tell me the first thing I do to try to solve this problem
Have a TRX250X with some issues, put a chinese carb on and it ran ok with bogging at high RPM so i decided to clean and put new gaskets in my old japanese carb and ran soo bad it wont even run that much, idle its perfect but moving it spits and sputters and bogs
did it spit and sputter with the Chinese carb? ( i don't care for them) . if it did not, buy a oem carb. yours is to worn out. if it did with both carbs, you need to go to spark. new plugs, or coil. be sure if it is spark that you rule out that nasty on off switch,, they love to ground out and cause that issue as well. please let us know what you find. it helps others. thanks for watching.
@thomasbriansavingmoney at low RPM it ran fine but when you get up it bogged alot, I put my old Japanese back on and asked around, found out I wasn't suppose to screw the pilot jet all the way in, this Friday I'm gonna take apart the carb again and do what people in my Facebook group say which is do 2 and a half turns and test it. When you screw the pilot in it makes it more lean, unscrewing it makes it more rich
Hey I have a 2001 Honda recon 250. It is essentially mint condition except it has a weird sputter/knock noise more when you’re idling, and it almost dies the engine out but sometimes it doesn’t. Any idea what it might be. The engine actually sounds like it’s running a little rough when you hear that noise it’s kind of wobbly almost
I have a 2000 Polaris sportsman 400 2 stroke had the atv for about year I drive here and there on a dirt road I live on just recently the bike bike is actually up it will start up just fine no issues there but once I start driving it I could drive it 50 kms and it will work just fine,I just started bogging out and stalling on me I leave it sit for 15 to 20 minutes and starts right up and works fine just wondering if it may need a carburetor clean and new spark plug or new cdi
I have a Yamaha big bear 400 2x4 that missed at anything above 3/4 throttle. It really almost sounds like a governor. I'm thinking maybe the parking brake sensor is acting up? Let me know what you think if you could, thanks.
@@sallycoleman7847 if it's bad it can cause false signals and make it not want to rev but I don't know if that's just for idle or not. I was told that but didn't know for sure.
I have a Yamaha pw80 and I cleaned the carburetor and it runs and idles but when I try to drive it it tries to stall or just no pulling power. Do you know what that could be?
2004 ltz 400 revs but seems to stall a bit then regains power sometimes It backfires also took the spark plug out and it’s a cr9 and book says it needs a cr7ei if it’s a ltz400f how do I tell if I have a ltz400 or ltz400f
I have a Kawasaki 220 bayou. I put a new carburetor on it, and it starts right up, and will idle, but when I give it gas, it bogs down, and won't go. Could you help me with this problem. Answer me here or make a video. I've tried everything I know to do. Thanks.
I have a 98 yz250 2 stroke. Previous owner must have hit something very hard because the front rim was so bent that when moving it, the tire would rub the front shocks. I'm having a similar issue. But mine is occurring as I'm hitting the powerband. The bike will act like it's starving for fuel and after a few quick twists of the throttle it'll go back to full power - resulting in the front wheel coming off the ground. I'm going to pull the carb off this weekend and give it a good cleaning. Fingers crossed that I find some green goo. Otherwise I might be looking towards checking out the power valve. I'm new to 2 stroke dirt bikes/ bikes in general. I purchased it 2 months ago and have slowly been replacing parts. I'm a diesel mechanic and love tinkering with small engines. I'm open to any suggestions.
@ thomas brain hello this Eric & my daughter have a 125cc Apollo four wheeler i just bought not even a month ago that starts fine but when she give it gas now it sputter & want pick up speed but was running fine at first
I have a Kawasaki Bayou 220 doing the same. I just replaced the carb with a new one.....Now when i push the throttle all the way the ATV sputters. It does fine with a engaging throttle to the mid point but after that it starts sputtering and when I let off the gas you can hear the engince sputter back down to idle. It idles fine....... it just at high speed where I get the issues. Brian can you help?
Hey man I just rebuilt my carbs on a Honda Goldwing and it ran fine to the house after a week it’s back to spitting and backfiring got any ideas for me
2018 Honda crf 125. I can putt around just fine. When I try to get the rpm’s up it’s crackling popping and will not go faster. You think this is the same problem?
I’ve got a 2017 ktm 150, a powerful hard-to-tune monster of a bike. Mine is spitting and sputtering in low rpm’s, especially in first and second gear. Out of those gears, in third, fourth and fifth, at high rpm’s, it runs fine …………until like 5 mins later when it bogs and wants to die. Any ideas?
Hey hey I have a 1976 25 horsepower Evinrude when I give it full throttle it's sputters and it's almost like it's having a hard time moving but it goes about 5 mph and it doesn't wrap high in the RPMs
On a 03 KTM 450 after complete top end rebuild , cylinder re sleeve, new piston & new titanium valves and new adjustable accelerator pump with every thing tuned and running perfect. one day after a few months my muffler started melting my side plastic muffler cover, then a few days later the bike starts to lose power at higher RPM. Any ideas ? Thanks for any help on this. Carb is KEIHIN FCR-MX 39 Carb jets stock 170-40, in shop book 175-48 Jets In as of 03-22 - 178/50
Hey just a quick question it's pertaining to a honda cruiser cycle. But with the carbs. I rebuilt em changed jets and but didn't change air/mix screws all same number jets just didn't want to clean em. Call me lazy anyway. I get hesitation at the top of all my gears and can't get over 55. Only have about 1/4 maybe less throttle pull in gear with load. Full rev in neutral. Don't really think any pop coming down if I member right. What's my area to reset? Side note. Parts are cheapest off Amazon. Bout the only things I really needed out of it were the two Lil round diaphragms and two o rings for my mixture screws. Should I pull amazon parts and clean oem 30yr jets and put them back in w new Orings and gaskits that I just got? Or do you think since probs at top of every gear and my whole final gear it's my coils and wires?
My carb problem (i think its carb, not sure) lets say at 10 minutes of using my motorcycle and im lets say 4th gear and i go to 3, 2 ... and it stays accelerated. bruuuuuuuuuuum until i left the clutch go the revs go down. Hope someone can give me a tip, thanks)
I have electronic fuel injection 200cc GY6 Chinese adult scooter. It is hesitating spit and sputtering while I am going down the road. Yesterday when I stopped and it was idling it just quit running. I tried for 5 minutes to restart it and nothing. After about 20 minutes I tried to start it again and it started right up. And then it spit and sputtered and hesitated all the way back home. Any ideals? Oh The name of the scooter is EFI 200 Capri it's a 2021 model.
I have a 2004 Can-Am we had to clean the gas tank and all that out. I was having trouble with the original carburetor. We think we cleaned it out properly but would not work. It was getting too much gas so I bought a Chinese carburetter and it’s still doing the same but running, a whole lot better but still not not running right should I just buy? Another Chinese carburetter Maybe I got junk one PM me if you can
that is NOT what those holes do. important that they be clear, sure. but that isnt what they do. they do the exact opposite. they REDUCE the amount of fuel by replacing it with air as air speed, and hence air pressure in the chamber surrounding those holes INCREASES, in an attempt to "linearise" the logarithmic nature of the suction on the jet itself. grab a low power vehicle, cover a hole or two in those emulsion tubes... mains are noticeable, idle emulsions are fiddly as an engine isnt supposed to make power at idle. one can treat the idle circuit as a very very small carburettor in its own right... as it is. you start doing pulls at various throttle settings, and depending what holes you soldered up... you will feel it get stinking rich through various RPM... or drill an extra one and feel it lean out at a certain RPM... and no amount of jetting or needle tweaking will alter that... as its a function of load, RPM, and throttle position. ever seen a carb jetting diagram that mentions air SPEED? it can take YEARS to get a feel for emulsion tubes. if youre into tuning, anyway... bit different when you just wanna mow the lawn or something. not as important on stationary type engines as they generally run at a fixed RPM, and people arent too concerned if theyre a bit "off" when not in the ideal load/throttle range... whereas the 125 that youre trying to get rid of the stumble at 7K, regardless of the throttle position, and no jetting changes you make are altering it... thats invariably the emulsion tubes. they first found out about the issue when they first strapped an engine into a car... "air compensation valves" was the early way of doing it... an intentional air leak in the manifold.
Can I just have 10% of your knowledge please 92 dr 350s kick start Runs a little rough, and the whole carb / engine looks a mess, but it runs I am very limited on tools/ mechanical knowledge, but am very afraid to strip this carb and sort it out I have a carb kit for the bike Help !!!! Is this type of carb reasonable simple to work on Any help please 🙏
I have a 1976 Sachs engine, Sparta buddy moped, 49cc. I pulled the old carb apart and the slide was ready to breath in half. I got a new keign carb and installed it. The moped starts fine, pulls hard, but breaks up at full throttle? Any suggestions... Thank you.
Hi Thomas ,my 250 dirt bike has started acting up, either dies when throttle or when it runs it’s jerking and just nothing happening, any ideas I have cleaned carb and jets with rake cleamer and adjusted float, any help would be appreciated
I have a Honda Rancher 350 four wheeler and every time I start it it starts popping out of the exhaust when it's idling then it just shuts off. And I don't know what's wrong with it
Good video, no look at me, just the info. I dislike videos other way around. I subscribed, I'm a bit of a wrencher myself and I'm bad about forgetting something I already knew. Thanks for posting and we'll explained.
Ok, I have. A Yamaha ttr230 2014 model , it’s huffing and puffing almost like it’s sucking air from the air box causing a rough idle and stall out eventually. How should I fix this.. is it the carburetor issue..
So I just rebuilt my sons 2005 Honda crf 80f (dirt bike) and it idles good, but when get on the throttle quick it boggs and then when it finally does come up in rpms, when I chop the throttle the rpms come down really slow, not crisp and fast as one would expect. What did I do wrong??
My bike started running rough today, will not hold a steady idle or rpm even at about 1/4 + throttle, but accelerates like a banshi if I get on the gas. I changed out spark plug, checked air filter...shrugs...
I have a 1997 Honda shadow 600 I am a new rider and don’t know much about bikes yet. Bike starts up fine and runs well up until 40mph then it starts to sputter and not accelerate past 50mph, the bike struggles to go any faster. I put sea foam in about 3 days ago, 50 miles and it still does the same thing.
Hi I’m having trouble with my Honda cbf 125!!! On full revs my bike likes to Chuck the engine light on and I think it’s because I’ve ran the fuel out a couple of times but I just want to know will this through my engine light on if it’s starving of fuel???
I just put in a brand new carb on my Yamaha Kodiak 400 and it is spuddering. I did have to slightly increase the idle screw but that’s it. Any thoughts?
Question for, Im helping a friend with a polaris 500 predator carburetor issue, the initial complaint was only start and run on choke, would not accelerate but stumble flat out upon trying to increase rpm. He brought the carburetor to me, I opened it up found a plugged main jet and slightly plugged pilot jet / emulsion tube, all clean now and reinstalled, now it will start on choke and idle off of choke but as soon as you try to accelerate it stumbles flat , the diaphragm slide does move up but kind of bounces as it stumbles to rev up... What is going on here, no vacuum leaks on the intake boot either...
i have the same issue with my recently purchased kawasaki brute force 750 atv. Seller told me it ran great and had the carb cleaned and re jetted by a local shop just before he put the bike in storage for the winter season. When i showed up to buy it, it spitted and sputtered like crazy and would not stay running. After i rode it around a little bit i raised the choke level up about 15% and it seemed to run fine then...the idle was great and no more sputtering or spitting. Seller was shocked and told me it ran perfectly before he stored it for the winter. I went ahead and bought it anyways knowing it was fixable no matter what and he gave me a killer price on it so I was still stoked to buy it. I so far am just riding it with the choke partially open and it runs fine so far that way at least.
colourtune plugs are handy as you can check the color of the flame which should be Bunsen blue after the choke is pulled in. there is a mixture screw under the carb usually which you can screw out a turn to get more fuel...might be worth a try. As long as the jets are the correct ones and the float heights are correct then with a clean carb the bike should run well.
It felt like a buddy was helping me understand carbs better. Thank you.
Thank you for watching! Happy to hear!
im going to try this today. i have an old 1991 honda 300 fourtrax that seems to carbon plugs almost instantly. the bike idles great and can putt around in SL no problem, but as soon as your on the throttle to get through your gears, its as if the mid range power is completely gone it struggles to accelerate, and it starts to come back in to normal in the high end RPM. its causing jerky acceleration through gears and when finding your cruising speed. ive taken apart the carb and cleaned the jets, along with replaced the air and oil filters, plug and oil. somewhat fixes the problem but reverts back (my guess once the plug fouls) im starting to think the float may need to be adjusted now, thanks for the new lead!
Love the fact you'll make a video for anyone that has a problem with something
The other week 😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊
The other week 😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊😊
yessir
Just got a 05 Yamaha bruin 350 in excellent condition. After about two weeks of riding, it started sputtering and bogging out when I give it gas. Took carb apart to clean and it was like brand new inside, but I cleaned anyway and replaced sparkplug. Put carb back on and same problem. If I slowly give it gas it'll slowly pick up rpms and fly but as soon as I decrease gas and begin to increase again I get the same sputtering like it's starving for gas or getting to much. Like I said, this machine hasn't been taken care of very well and has less than 1000 miles. It also will backfire a little bit every once in a while after I get off gas at high speeds. Need help
I have the same condition on a small ct 200
Same problem here on the same quad, did you get it working and what did you do?
Did you ever find out what the problem was
Figure out the problem?
Being a 2 stroke the crankshaft seals may have dried out over time and is coursing an air leak around the crank.
Check all gaskets and crankshaft seals as you don't need to hole a piston with a lean fuel air mixture.
Take care and good luck 👍
Best explanation yet. 2 out of four are doing this. I'm on it. Thanks. The 99 honda 300, never a problem. The rubicon 472, both have this issue. Was puzzling. Will follow.
To the point and exactly what I needed. Thank you!
Fantastic man I think you've just reminded me to clean the little holes on the jets I so got lazy and just changed the jets didn't bother to look in the little holes thanks for real man , peace
I could not figure it out. My new motorcycle only has 200 miles on it. Came with a carburetor I have to work to get the screws off the bowl. No biggie. Yet it puzzled my on what it was doing. Did not make sense. Now it does. So, I'm going to do exactly what you suggest. I will see. If works, you just saved me money and a big headache. Thanks for your help.
Great video. I succeeded in rebuilding both carbs on my 1997 Polaris 500 snowmobile thanks to this video. Reassembled carbs on machine and fired it up. The mag cylinder is not drawing in the fuel, thus the mag cylinder is not firing. Suggestions?
Is there a number that we can reach you on your telephone number I'm having the same problem when you just made that video my scooter is spotting and spitting it's it's it's starts but it doesn't it doesn't run for a while it's turns off quickly
Good video. I have been burned on that a few times where i didn't or couldn't get the emulsion tube out and the engine would still run poorly
similar issue with my royal Enfield 350cc. Uses a 29mm carb, the bike tends to start dying when it's running with load at a constant throttle, say through the mid-range RPMs (2000- 3500 rpm), but post that 3500 rpm till the redline at 5500 it works fine when throttle position is constant there.
Straight to the point no nonsense talking.
Those are some working hands if I ever saw some. Keep up the good work.
im gonna that, maybe tonight cuz im so eager on getting my moped running good thank you.
Good short. But very informative video. Straight to the point ☝️. Thanks.
Really liked this video. Thanks Thomas! I'm new to working on small motors and eager to learn. Learned alot. Thank you. This is the first of your videos. I've subscribed and will be checking more of your videos. I'm here because, guess what? My new to me, used ATV, is having carb issues. So again, thanks
Iva a Kawasaki KLF 300 that won’t start !! It was originally just getting slower and slower to start, so I stripped carb and replaced all needles and jets etc , I found someone before me at left in too many rubber rings and washer on pilot air screw jet , but now after re-assemble it won’t fire at all ?? Just seems to back fire through carb a little bit , I’ve good fuel and I have spark , I’ve tried spraying into carb while cranking to see but still no fire ????
Thank you, Thomas. Clear and well explained. My Rancher stumbles , sputters when under load (pushing snow up a hill).
Did you Clean yours like that? Did it work? Mines doing the same thing.
SUBSTANTIAL Sir Thomas Brian
Thanks 👍 as always enjoy
Sir Thomas Brian
From Nick Ayivor from London England UK 🇬🇧
This was probrably one of the best videos about small carbs thank you so much I dont think Anyone could have explained that any better video was straight to the point.. Ive been struggling with a small carb. First it was leaking out the over flow then it was backfiring thru the air intake now its bogging down with throttle doesnt die starts right up but bogs way down driving me crazy but im pretty sure after dozens of videos this is the video i needed to see. Will let you know thanks again
Got a 2006 883 sportster. Would cut out on low speed crack pop ....everything they are known for. CV carb. I assumed pilot was too lean from factory (42) so I went thru process after complete cleaning of carb, replacing accelerator pump diaphragm and orings, gasket, of trying multiple new bigger pilots. 45, 46, 48. No change. I got a new 42 pilot, put it in. Problem now is upon throttling, it bogs n dies. If I stay off throttle itll idle all day, but soon as throttle is given, it bogs. Tried adjusting air mix, 2.5 turns out from lightly seated and 1/8th turn in from there. Gradually closing but No change. Bike has drag pipes. No baffles ran before that way just would cut out under 3000 rpms so I set out to fix problem, lol , now I can't use throttle at all it dies. I've adjusted idle as well with no luck. Black sooty smoke out pipes upon throttling, or it spits from carb airbox side of throat. Plugs fouling bad. Changed plugs, put bike back stock, 42 pilot, 175 main...float been adjusted by spec...idk what else to try. Starts without choke ez. Soon as you throttle it it cuts out bogs n dies...all this just to try to stop the low speed popping n cracking...😎. Guess I should have left it alone but I was trying to improve it. With a bigger pilot. But that failed. I believe its overly rich...from the black smoke out pipes...and fouling of plugs. About the only thing I haven't tried is shimming the needle, which I understand only richins mix so I have not done that...any ideas? Bike only has 22000 miles on it. Screaming eagle stage 1 breather....drag pipes, everything, stock....rgm883@gmail.com. appreciate any ideas. Float valve is working, accelerator pump works, no tears or pin holes in slide diaphragm....all channels blown out with light psi compressed air after complete rebuild and clean....rebuilt completely totally dry n clean....I'm lost...help? I do my own wrenching, dealerships take you to the bank even when it's a 20$ deal they take you for 300$ this has to be something simple....emulsion tube is stock, emulsion tube jet is installed correctly. ...idk...thx for suggestions...my email is above.
This video helped me get my 4wheeler running like new thank you so much
I have a taotao 125cc Dirtbike. The carb it doesn’t run great with unless it’s in higher rpm. Whenever it is idling I have to feather the throttle to build the rpm before going. If I just hit the throttle from idle it bogs down and dies. It’s super annoying to ride because of this. Also the piston was on wrong with the intake and exhaust sides flipped since I fixed that it does run better but still is the same bogging problem. I’ve adjusted the carb so many times but to adjust the air fuel screw I have to take it off and it’s annoying taking off over and over
I have a Farmall 100 tractor that fires up with no problem. Then it starts sputtering and puffing smoke out the exhaust like it's flooding or choking. After doing this for several minutes, the engine will finally die. But, I can pull the starter and it will immediately fire back up with no hesitation before repeating the same issues as before. When it is sputtering, the rod leading from the carburetor will move back and forth instead of staying stationary like you would expect. Do you have any ideas as to what may be the cause of my issues? I inherited the tractor from my late grandfather and have some mechanical experience, but am in no way a professional. Any advice you could provide would be greatly appreciated!
Problem now
On my o7 Yamaha golf cart I pulled the carb to clean it... just regular maintenance now it won’t run without the choke on ive sprayed around the carb for vacuum leaks and it don’t have any the only thing I could not get out was the emulsion tube under or I guess above the main jet
Omg,,, I just had my 1982 Yamaha IT175 out today. I’ve had the carb apart a number of times and cleaned but did not take notice of those small holes, you may have answered my “bogging” concern. Additionally, that tube I believe is restricted because I can not blow air through it. Thanks for the information, I will try your suggestions.
So I just bought on Amazon a 49cc 2 stroke racing motor that has a intake kinda like that one and I belive gravity feed fuel cus I need to flip the bottle to get fuel. My thing is I wasn't going hard on the throttle to brake it in and finally was able to open run like 75 of the throttle. I see that it's not taking much fuel while running high speed and bogs out kinda died till kinda giving gas then turns on. Only runs in low or mid speed utility not high for more then few mins
I have a 2008 Suzuki DRZ 125 and I can usually kick it over. Though when I turn the throttle it does not return to idle but it keeps going up or staying if what you just turned the throttle could you help me of what is going on?
Me and my dad are working on a clients Yamaha TT-r230. He had let it sit for number of years. We had put a lot of new parts on it and still can’t get low rpm’s. Starts and idles perfect and all the power at top end. Just no low end power just stutters and wants to stall. We flushed the tank servile times. We all so put a new pepcock, fuel line, carburetor and battery on it. We have tried tuning the low end jet and nothing makes a difference but if we pull the choke 1/8 the way out. It will run like a dream. Can any one help us and shed some light for us please? Thank your guys.
Pull the paper off a twist tye and use that wire to unplug these tiny holes.
Hi . Thomas thank you for the info, i have an issue with 2006 ktm 50sx with stock carb and jet Dellorto carb brand. cleaned carb. as you said. 4,x. it boggs down at full throttle bike on stand. 60/1 fuel ratio. im in california 40 miinutes inland from beack. so u get idea on elevation. i appreciate ur help
I have a problem with the kawasaki klf250 carburetor dismantled, cleaned, set according to the instructions, fires ok, drives ok, the problem shoots from the exhaust when releasing the gas, the candle has a metal color
Is it normal for the carb floats to be stuck in the bowl? Is this the design? Never seen that before. I have a 1982 yz125j that keeps flooding the cylinder and plug. Can you make a video on that cause and fix?
Great video. Do you have a video on timing? 1998 polaris explorer 300?
Awesome video! Iam having problems with my yamaha wolverine and it's spitting and sputtering like it's starving for fuel, i bought this bike brand new and this is the first problem I've ever had with it.
I have a wolverine doing the same thing
@@deannaoxendine1202 change your spark plug
Man runs perfect in every gear when you put it in reverse it don't have no power it just spits and sputters will not go backwards I also bought a brand spanking new carburetor and put it on it and it run perfect but like I said when you put it in reverse it just spits its better it won't go backwards unless you're on flat ground
Question, I just bought a 1994 Kawasaki Bayou 220 and the starter sounds horrible. I replace the starter with a brand new one off of Amazon and the starter sounds exactly the same and it’s almost like a grinding sputtering noise and it sounds like the starters not getting enough power to crank the four wheeler. Any ideas?
I have a problem with this tool, it's a KTM 250 2T
The tool has not been used for almost a year
This week I found time to take care of it, I did a fuel-oil change, I cleaned the filter plug, everything, finally I tried to start it, but the car could not start.
It only started with carburetor spray and shut off straight away
From that I understood that the carburetor needed to be cleaned and that's how I did it.
Now the problem is different, the motorcycle drives straight up to very, very high turns
I played with the air-fuel screw but unfortunately it didn't help.
Is there a situation where the problem is different? Something in the carburetor maybe? need help please
How about cub cadet that is like fuel injected and does not really have the old fashion carburetor . Motor was surging but now it won’t turn on. Any suggestions?
My gas golf cart only wants to run when the choke is pulled out. What can I do to fix this. Thanks for your help.
This is the pilot jet in the carb bowl. Remove clean and replace.
I will try the method you explained in your video
I have a KTM 2017 xc300 i cleaned my carb but it hadn't stop spluttering idk what else can I do. I'm going to chek the float needle. I already cleaned the jets and also the idle jet. I completely removed them and poke them like you did in the video. Please help
Straight to the point you didn't f****** talk no b******* in the beginning like everyone else.... Need more videos like yours Explaining something's
What if I do clean the sides and everywhere else but I still have a 1/4 throttle stumble/sputter
How do you diagnosis Hanging idle on deceleration on a 400cc 2stroke ?
I'm having this problem, but it's a new carburetor, it was my first motor kit and I bought a zeda 80 when it was in stock, so I started a bike build for my son with my first motor similar to the PK 80 on a occ chopper bike everything is offset to the left cause of the wide bike tire, well my issue doesn't seem to be the carburetor, and being that the exhaust system is a flex tube pipe could that be a problem why it spitting and sputtering.
Good informative video. Brief and to-the-point. Thank you
Great content. I have a 82 cb650 cylinder 4 sputters and backfires. I forgot to remove and clean the idle jets. Did everything else.
Hi Thomas, I have some questions I'd like an answer for. I have 1995 summit 670 with vm40 mikuni carb, everything is squeaky clean almost spotless in there everything new except for needle jet and needle. (needle valve, seat, main jet pilot jet, gaskets) and had it set up to factory such as round slide opening air screw and idle screw float arm adjusted to 19.6mm bottom of the arm to face of carb where gasket sits.
carb was keep flooding I tried to have float arm to 20.5mm didn'tdo it. flipped the arm set it to the height still flooding. I took the slide out and excessive amount of fuel was coming out from main jet( throat I think), thru jet needle tube. I blocked the jet with needle and tried again and breather hole and such was puking out fuel. why would it be keep flooding? and its happening to both of carb and I dont know if floats will go out at same time
My Kawasaki bayou is revving almost wide open.
When I choke... It gets higher.
New carb
I can't find anywhere that's sucking air in.
Any ideas?
Please help!!!!
Thanks in advance
i don't think i've ever seen a pair of old school man hands like this in about 20 years. cuddos to you sir you use the body god gave ya.
Did that in a PHBG 21mm.. still spits. I noticed that by adjusting the air mix screw it made it a little better, but still spits at WOT.
Tried many different settings turning the screws 1/4 at a time but still cant get it right.. i had to lean it a bit moving the needle ring up as the engine was constantly flooding. Thats when the spitting started... should i get the needle ring back in the middle and change to smaller jets??
Main jet 92
idle get 50
Gilera runner 70cc.
thanks in advance
Helloe Thomas. got a Raptor 350. (little story) bought it in bad shape. but it started and idled perfectly but i couldnt rev it (died) found the choke was corroded stuck so i got it loose and changed the sparkplug. wouldnt start. cleaned the carb, now it backfires ALOT(when revving too). it wont idle nice, either i rev it to keep it running or use the choke so i idles high. and it pops through the intake now. seems like everything became a mess with it. do you know what could be wrong here?
I took apart my carburetor yesterday and when putting it back together I found a gold screw and didn’t know where it belonged 🤦♂️ now I know 😂. Gotta take back apart
I just bought a 1997 formula z Ski-Doo I started up it runs good for 10 seconds and then it starts spitting and sputtering I got a feather the gas and then it backfires and shuts off is that a carburetor problem they need to be cleaned also and it is that the first place I start or should I get new plugs they're pretty new check the gap?? Can you tell me the first thing I do to try to solve this problem
Thanks for "very well explained" instructions for repairing an engine that only runs on 1/2 choke.
Have a TRX250X with some issues, put a chinese carb on and it ran ok with bogging at high RPM so i decided to clean and put new gaskets in my old japanese carb and ran soo bad it wont even run that much, idle its perfect but moving it spits and sputters and bogs
did it spit and sputter with the Chinese carb? ( i don't care for them) . if it did not, buy a oem carb. yours is to worn out. if it did with both carbs, you need to go to spark. new plugs, or coil. be sure if it is spark that you rule out that nasty on off switch,, they love to ground out and cause that issue as well. please let us know what you find. it helps others. thanks for watching.
@thomasbriansavingmoney at low RPM it ran fine but when you get up it bogged alot, I put my old Japanese back on and asked around, found out I wasn't suppose to screw the pilot jet all the way in, this Friday I'm gonna take apart the carb again and do what people in my Facebook group say which is do 2 and a half turns and test it. When you screw the pilot in it makes it more lean, unscrewing it makes it more rich
i put a new carb on my 1988 yamaha big bear 350 , but it backfires and stalls out , what can i do to resolve this, thanking you in advance
Are you still active my bro
Hey I have a 2001 Honda recon 250. It is essentially mint condition except it has a weird sputter/knock noise more when you’re idling, and it almost dies the engine out but sometimes it doesn’t. Any idea what it might be. The engine actually sounds like it’s running a little rough when you hear that noise it’s kind of wobbly almost
I have a 2000 Polaris sportsman 400 2 stroke had the atv for about year I drive here and there on a dirt road I live on just recently the bike bike is actually up it will start up just fine no issues there but once I start driving it I could drive it 50 kms and it will work just fine,I just started bogging out and stalling on me I leave it sit for 15 to 20 minutes and starts right up and works fine just wondering if it may need a carburetor clean and new spark plug or new cdi
I have a Yamaha big bear 400 2x4 that missed at anything above 3/4 throttle. It really almost sounds like a governor. I'm thinking maybe the parking brake sensor is acting up? Let me know what you think if you could, thanks.
how does the parking brake sensor make it act up ?
@@sallycoleman7847 if it's bad it can cause false signals and make it not want to rev but I don't know if that's just for idle or not. I was told that but didn't know for sure.
@@tygoodwin7179 my kfx 700 misses and cuts out after half throttle and my "front "park brake wires are pulled out ( left pull brake handle wires )
@@sallycoleman7847 that's weird I'll look at mine and see if mine are pulled out
I have a Yamaha pw80 and I cleaned the carburetor and it runs and idles but when I try to drive it it tries to stall or just no pulling power. Do you know what that could be?
2004 ltz 400 revs but seems to stall a bit then regains power sometimes It backfires also took the spark plug out and it’s a cr9 and book says it needs a cr7ei if it’s a ltz400f how do I tell if I have a ltz400 or ltz400f
I have an ATV 125 idols good when I put it in gear it’s It’s Spits and sputters
Same thing with my 2019 ttr 230
I have a Kawasaki 220 bayou. I put a new carburetor on it, and it starts right up, and will idle, but when I give it gas, it bogs down, and won't go. Could you help me with this problem. Answer me here or make a video. I've tried everything I know to do. Thanks.
I have a 98 yz250 2 stroke. Previous owner must have hit something very hard because the front rim was so bent that when moving it, the tire would rub the front shocks. I'm having a similar issue. But mine is occurring as I'm hitting the powerband. The bike will act like it's starving for fuel and after a few quick twists of the throttle it'll go back to full power - resulting in the front wheel coming off the ground. I'm going to pull the carb off this weekend and give it a good cleaning. Fingers crossed that I find some green goo. Otherwise I might be looking towards checking out the power valve. I'm new to 2 stroke dirt bikes/ bikes in general. I purchased it 2 months ago and have slowly been replacing parts. I'm a diesel mechanic and love tinkering with small engines. I'm open to any suggestions.
That's a man who knows what he's saying. Thank you
@ thomas brain hello this Eric & my daughter have a 125cc Apollo four wheeler i just bought not even a month ago that starts fine but when she give it gas now it sputter & want pick up speed but was running fine at first
I have a Kawasaki Bayou 220 doing the same. I just replaced the carb with a new one.....Now when i push the throttle all the way the ATV sputters. It does fine with a engaging throttle to the mid point but after that it starts sputtering and when I let off the gas you can hear the engince sputter back down to idle. It idles fine....... it just at high speed where I get the issues. Brian can you help?
Hey man I just rebuilt my carbs on a Honda Goldwing and it ran fine to the house after a week it’s back to spitting and backfiring got any ideas for me
2018 Honda crf 125. I can putt around just fine. When I try to get the rpm’s up it’s crackling popping and will not go faster. You think this is the same problem?
I’ve got a 2017 ktm 150, a powerful hard-to-tune monster of a bike. Mine is spitting and sputtering in low rpm’s, especially in first and second gear. Out of those gears, in third, fourth and fifth, at high rpm’s, it runs fine …………until like 5 mins later when it bogs and wants to die. Any ideas?
I am having trouble with my scooter and I could use your help i have tried everything
Hey hey I have a 1976 25 horsepower Evinrude when I give it full throttle it's sputters and it's almost like it's having a hard time moving but it goes about 5 mph and it doesn't wrap high in the RPMs
great video i have a 2 stoke wr 250 husky runs fine low revs but mid to high really spluttery any ideas
Likely not enough gas at high rpms if its sputtering at full throttle
On a 03 KTM 450 after complete top end rebuild , cylinder re sleeve, new piston & new titanium valves and new adjustable accelerator pump with every thing tuned and running perfect. one day after a few months my muffler started melting my side plastic muffler cover, then a few days later the bike starts to lose power at higher RPM. Any ideas ?
Thanks for any help on this.
Carb is KEIHIN FCR-MX 39
Carb jets stock 170-40, in shop book 175-48
Jets In as of 03-22 - 178/50
I got a 1996 Kawasaki Ninja that has a bogging problem I can use this method to fix it right?
Hey just a quick question it's pertaining to a honda cruiser cycle. But with the carbs. I rebuilt em changed jets and but didn't change air/mix screws all same number jets just didn't want to clean em. Call me lazy anyway. I get hesitation at the top of all my gears and can't get over 55. Only have about 1/4 maybe less throttle pull in gear with load. Full rev in neutral. Don't really think any pop coming down if I member right. What's my area to reset? Side note.
Parts are cheapest off Amazon. Bout the only things I really needed out of it were the two Lil round diaphragms and two o rings for my mixture screws. Should I pull amazon parts and clean oem 30yr jets and put them back in w new Orings and gaskits that I just got? Or do you think since probs at top of every gear and my whole final gear it's my coils and wires?
I have a kymco 250 it after riding for 15 mins the engine starts to lose then get power on pulses of 2 to 3 seconds
My carb problem (i think its carb, not sure) lets say at 10 minutes of using my motorcycle and im lets say 4th gear and i go to 3, 2 ... and it stays accelerated. bruuuuuuuuuuum until i left the clutch go the revs go down. Hope someone can give me a tip, thanks)
I have electronic fuel injection 200cc GY6 Chinese adult scooter. It is hesitating spit and sputtering while I am going down the road. Yesterday when I stopped and it was idling it just quit running. I tried for 5 minutes to restart it and nothing. After about 20 minutes I tried to start it again and it started right up. And then it spit and sputtered and hesitated all the way back home. Any ideals? Oh The name of the scooter is EFI 200 Capri it's a 2021 model.
I have a 2004 Can-Am we had to clean the gas tank and all that out. I was having trouble with the original carburetor. We think we cleaned it out properly but would not work. It was getting too much gas so I bought a Chinese carburetter and it’s still doing the same but running, a whole lot better but still not not running right should I just buy? Another Chinese carburetter Maybe I got junk one PM me if you can
that is NOT what those holes do.
important that they be clear, sure.
but that isnt what they do. they do the exact opposite. they REDUCE the amount of fuel by replacing it with air as air speed, and hence air pressure in the chamber surrounding those holes INCREASES, in an attempt to "linearise" the logarithmic nature of the suction on the jet itself.
grab a low power vehicle, cover a hole or two in those emulsion tubes... mains are noticeable, idle emulsions are fiddly as an engine isnt supposed to make power at idle. one can treat the idle circuit as a very very small carburettor in its own right... as it is.
you start doing pulls at various throttle settings, and depending what holes you soldered up... you will feel it get stinking rich through various RPM... or drill an extra one and feel it lean out at a certain RPM... and no amount of jetting or needle tweaking will alter that... as its a function of load, RPM, and throttle position.
ever seen a carb jetting diagram that mentions air SPEED?
it can take YEARS to get a feel for emulsion tubes. if youre into tuning, anyway... bit different when you just wanna mow the lawn or something. not as important on stationary type engines as they generally run at a fixed RPM, and people arent too concerned if theyre a bit "off" when not in the ideal load/throttle range... whereas the 125 that youre trying to get rid of the stumble at 7K, regardless of the throttle position, and no jetting changes you make are altering it...
thats invariably the emulsion tubes.
they first found out about the issue when they first strapped an engine into a car... "air compensation valves" was the early way of doing it... an intentional air leak in the manifold.
Can I just have 10% of your knowledge please
92 dr 350s kick start
Runs a little rough, and the whole carb / engine looks a mess, but it runs
I am very limited on tools/ mechanical knowledge, but am very afraid to strip this carb and sort it out
I have a carb kit for the bike
Help !!!!
Is this type of carb reasonable simple to work on
Any help please 🙏
I have a 1976 Sachs engine, Sparta buddy moped, 49cc. I pulled the old carb apart and the slide was ready to breath in half. I got a new keign carb and installed it. The moped starts fine, pulls hard, but breaks up at full throttle? Any suggestions...
Thank you.
Hi Thomas ,my 250 dirt bike has started acting up, either dies when throttle or when it runs it’s jerking and just nothing happening, any ideas I have cleaned carb and jets with rake cleamer and adjusted float, any help would be appreciated
I have a Honda Rancher 350 four wheeler and every time I start it it starts popping out of the exhaust when it's idling then it just shuts off. And I don't know what's wrong with it
Good video, no look at me, just the info. I dislike videos other way around. I subscribed, I'm a bit of a wrencher myself and I'm bad about forgetting something I already knew. Thanks for posting and we'll explained.
Replaced the intake jet still sputters with throttle advance on kawasaki 300, 90s something model, 2 wheel drive.
Ok, I have. A Yamaha ttr230 2014 model , it’s huffing and puffing almost like it’s sucking air from the air box causing a rough idle and stall out eventually. How should I fix this.. is it the carburetor issue..
So I just rebuilt my sons 2005 Honda crf 80f (dirt bike) and it idles good, but when get on the throttle quick it boggs and then when it finally does come up in rpms, when I chop the throttle the rpms come down really slow, not crisp and fast as one would expect. What did I do wrong??
My bike started running rough today,
will not hold a steady idle or rpm even
at about 1/4 + throttle, but accelerates
like a banshi if I get on the gas.
I changed out spark plug,
checked air filter...shrugs...
Need a video on quad that won't idle and backfires allot
I have a 1997 Honda shadow 600 I am a new rider and don’t know much about bikes yet. Bike starts up fine and runs well up until 40mph then it starts to sputter and not accelerate past 50mph, the bike struggles to go any faster. I put sea foam in about 3 days ago, 50 miles and it still does the same thing.
Have a 650 Kawasaki prairie but will only run on choke tried cleaning the carburetor it only still runs on choke
Hi I’m having trouble with my Honda cbf 125!!! On full revs my bike likes to Chuck the engine light on and I think it’s because I’ve ran the fuel out a couple of times but I just want to know will this through my engine light on if it’s starving of fuel???
I just put in a brand new carb on my Yamaha Kodiak 400 and it is spuddering.
I did have to slightly increase the idle screw but that’s it.
Any thoughts?
Question for, Im helping a friend with a polaris 500 predator carburetor issue, the initial complaint was only start and run on choke, would not accelerate but stumble flat out upon trying to increase rpm. He brought the carburetor to me, I opened it up found a plugged main jet and slightly plugged pilot jet / emulsion tube, all clean now and reinstalled, now it will start on choke and idle off of choke but as soon as you try to accelerate it stumbles flat , the diaphragm slide does move up but kind of bounces as it stumbles to rev up... What is going on here, no vacuum leaks on the intake boot either...