For valve settings and other specs for these types of engines, click the link in the description! www.thejunkmanadv.com/how-to-valve-adjustment-tutorial.html
thejunkman could you put a link to the jam nut and screw tool please. Trying to find the spec for size you have there but you did not mention in comments or video. There are many sizes available and I have the same motor you have there. Thanks
Very helpful! thanks a ton! Everyone talks about lining up notches but that only works if the cam is installed correctly. This guy is correct in identifying the compression stroke using the tappets. On the yx 140 your sprocket can fit 180 degrees meaning the notch signalling TDC is on the other side and if you match it, you wont be on the compression stroke. If you set you valves while they are actuated, you'll have mad tapping sounds.
THANK YOU! This very much helped me with my Grom valves. Never worked on a bike, knew about lining up the "T" but didn't know about Top Dead Center. I had did the valves damn near bottomed out. THANKS! It sounds like it did when I bought it now.
Brilliant video! No other video about this mentions anything about the flywheel cover moving slightly, so i thought something was wrong and had no idea to sort it. Thank you.
I teach motorcycle, ATV & snowmobile repair, so videos like these we sometimes use as lessons. At 4min and 29sec into the video you said to "unloosen the jam nut" - well "un-loosen" would be TIGHTEN. I think you meant LOOSEN the jam nut
Well technically I guess you could, but the timing marks won't be labeled for you like they are on the flywheel. Also this would assume that the cam is in proper time to the flywheel, so some verification of that would be needed. Good question/observation!
Thanks for the help mine been off just enough so that i could pop start the bike down a good sized hill most of the time andnit ran fine but if i tried to use the kicker to start it it was impossible it felt like i was kicking against a locked up moter or almost like how hard it is to kick when your doing a comp check \ leakdown . it was bad i actually snapped. A kick starter in half trying to do it. But after the adjustment it was perfact. Im guessing there was too much slack in exhaust valve and it wasnt opening up fast enough makimg it hard to kick
I have a klx 140L. I'm new to all this.. the bike used to idle almost silently.. now I notice a top end chattery type of noise. It's not major. After getting a service manual I thought valves. I'm having a hard time knowing how much friction you should have on the feeler Guage. Everybody says a little drag. Is that so tight that the next biggest size won't fit? Or will the next biggest size be really hard to force? Well, I think I adjusted too far out. Now it was the same clatter noise but the engine is also running louder. Gonna re-do it today. It definitely needed it but am I dealing with another issue? It still runs good. I just want it to idle nice like it used to. Could it be my timing chain needs replacing? What else goes on these things? Compression is good. It's a 2008. I think I'm the first person to really ride this thing hard. This 12 year old bike was practically new when I got it. Any help would be appreciated. I want to stop this problem before it escalates.
FYI American Honda use as a go no go technique to sit valves simply explained whatever feeler gauge you’re supposed to use to set your valves do you say that but then you take the next one up if it goes in then you didn’t get your valve adjusted right that’s the term go with the original feeler gauge and no go with the next one up that way your valve is absolutely adjusted perfectly there is no such thing as a Tate setting or a loose setting it either is or it isn’t
Thanks friend! I have a cuestion: My Magneto flywheel has the" T" impressed and right next to it, on the right a few mm apart a line mark. I have seen many videos but nobody seems to film the correct position. DO I HAVE TO ALIGN THE "T" WITH THE MARK ON MY VISOR, OR DO I HAVE TO BARELY PASS THE "T" MARK AND ALIGN WITH THE STAMPED LINE JUST NEXT TO THE "T" WITH THE MARK ON THE MOTOR CASE VISOR WINDOW? Hope You can help me out! Thank You very much!
Thank You very Much. Just one question: on the FLY WHEEL I have the letter "T" and just maybe 2 mm further a line mark. Some people and manuals refer to aling the "T" with the mark on the case, but others state You have to pass the "T" mark and algún the line mark with the case... Since I could not see your flywheel, can You help me out? Thank You very much!!!
Where can I find a feeler gauge with the short tips? Each one I find is too long for my TaoTao DB10 and I can't fit it inside the opening to get into the gap. Do you have a part number I can search for?
Great video! I have a 110 (107cm3) it had some issues when I bought it and it didn’t run. I fixed the cdi wire issue and took off the black and white to disable the security and finally got spark. I put the plug back in and tried to start it it tried to fire then backfired and I shut it off. Now when I try to crack it it’s slow like a dead battery, it was fine before it backfired. I’m stumped other then timing or a valve adjustment?? Was hoping you could help 🙏
thejunkman it’s a new carb, starter, battery, and all electronics. It’s really struggling to turn over. It was fine before. I just didn’t have shark but it turned over fast. Then once I fixed the spark issue and tried to start it, it then backfired and I had already taken my finger off the starter. Then when I tried to start it again that’s when it became slow. Like something is stuck. If I take the plug out it is a bit faster but not like it was. And both starters and battery are fine. I’ve tried a jumpbox which makes it a little better but noting like it should be. Oh And the positive side gets hot fast. ?
It is an electrical issue if the post is getting hot. Sounds like there is a bad connection or too much resistance in the battery lead to the starter. The solenoid could be a culprit too. The back firing might have just been a coincidence and has nothing to do with this.
I dont know where to start. I cant find my TDC the flywheel have T and an F mark i think. The bike is an ssr125cc 2015 year pit bike. How do you know when its at tdc i can't see the piston. i can feel it. I see a mark on the timeing cover is that it
I did not know about the exhaust adjusting are thay both the same gage. Is compression stroke the exhaust open looking back its kind of funny dame. Do you have to conseder died strock when spining the flywheel. It is still tight whan spining the flywheel. Lost
hi junkman...can i ask a question, what's the valve clearance of intake and exhaust if the engine has racing camshaft stage 2? my motorcycle's motor looks like similar on your motor,..but its only a 110cc...and something about valve overlap on motorcycle, do you have any clip on it?
Bravo for the video. Can you tell me the number of the filler you used? And also if you use the same for both valves or there is a difference for the intake and exhaust. thanks
hi sir have a nice day to you,I have some question about my chainise motorcycle 110cc,what is the best clearance or what number in feller gauge can I used,my motor is no manual is traction I bout is 2ndhand
My engine smokes pretty bad after running a while, likes its getting way too hot.. The exhaust valve was set way too tight. Read somewhere they do this to pass emissions...Do you have any suggestions to keep the engine cool?
Proper jetting will keep the engine within operating temperatures. The only other thing you can do to an air cooled engine is to install an oil cooler if possible. Not all engines have this provision though.
You're on to something. I ran the engine around half choked and it's not smoking and getting hot like it did before. I ordered a new carb with an adjustment screw not just an idle adjustment.
junkman very nice video and helpful! I have a honda cg 125 how to really determine if the engine is on top dead center i mean there is compression and power stroke and do i rotate the flywheel counterclockwise? thanks man!
Get a service manual for your bike, you will need it to know the specs. There should be some markings on the flywheel but you will have to read in the manual to know which is which, usually it is a "T" but not always.
Hi. Thank you for the video. A question for you. My starter chain beneath my flywheel broke, so I thought it would be no big deal to pull it and put another chain on it. How can I tell if I put the flywheel back on in the correct position? Right now, on tdc, the timing chain sprocket lines up 180 out. 125cc coolster.
Typically, yes. This can also be a sloppy cam chain, so make sure the tensioner is working. Most of these engines have a jamb bolt that you unscrew to let the spring apply the tension and then tighten it back up to secure it.
Hi, could you plesae help me? i have a similar engine from a TAOTAO 110cc dirt bike. It was working great in the begining but then it started to bog in high revs. I bought a new carburator, changed the spark plug and checked the valve clearance. But still its the same. Have you heard of a problem like this?
Hi nice video sir. I want to ask one question. how to identify that that the crankshaft bearings are failed or it is timing chain which is making rattling noise?
I'm working on the exact same engine but it is one of the Chinese clone 110 and they do not have a book or a manual what was your adjustment for that engine.002
Well if you are unsure, get out your feeler gauges and measure them. However some symptoms could be; hard starting (when everything else carb/fuel and ignition check out fine), sound, loss of performance when hot (again as long as other systems check out OK)
@@FormerNine I have been on RUclips for almost 14 years now. I have replied to *almost* every comment ever on my channel. I have always felt my viewers deserve it if they post a constructive comment.
I can't insert the feeler gage. I don't won't to brack the seal if so. Is it ok to leave cam settled with the jam nut. I don't really want to misswith stuff. I'm reading my manual I can't find anything.
Thanks for your video. I have a Honda CB1 (125) 2018 model, and Model# CGX 125 and have been getting loud tapping and ticking for a while now and it's driving me crazy. The valves are set to 0.08mm and 0.12 mm intake and exhaust respectively. I have changed outer clutch basket and crankshaft+bearing and I still hear that annoying tapping and ticking. What's your take on it?
@@thejunkman Really! IDK there is definitely some distinct tapping and clicking. Maybe wasn't too clear in video. I've listened to other bikes like it and there is a huge difference. Others are much softer (just as mine was before). Mine is noisy when compared, especially when I am accelerating.
Hey i have the same engine and it has sat for some time, i have changed the carburetor and adjusted the valves but it still backfires a lot out of the exhost and sometimes out in the carb, do i need to change the valve seals or what should i do?
thejunkman when i looked at the sparkplug and a diagram that shows lean and rich spark plugs i looks carbon fouled.... i have tried adjusting the fuel mixture screw but nothing works....
Question: After you complete the adjustment on the top valve (compression stroke), do you need to rotate the piston in order to adjust the bottom valve (exhaust stroke)?
At true TDC both valves are closed, that is when you adjust both to their proper spec (found in the manual as every engine manufacturer is just a little bit different)
@@thejunkman Thanks so much for your quick response, Mr. Junkman! I have the owner's manual for my Honda 50 C110 and will refer to that for the proper gap. And, I will follow your procedures. Your instructions are awesome! Thanks, Salvatore
Ok quick question, my buddies Apollo 250 (Honda 230 clone) we just adjusted valves, set intake to .004 (very slight drag on .003 feeler gauge, don’t have a .004) and exhaust to .005 ish, when you pull the feeler out of the exhaust gauge and watch the valve and rocker arm it kind of “falls” back down, is this normal? We weren’t 100% sure that we were at TDC, there is an access hole to the flywheel but no mark anywhere on it, but we watched the valves and turned it over with no spark plug, intake valve opened, kick got harder to move, went slow and then right after the puff of air out of the spark plug hole do you stop? Or does it need that little 1/4-1/2 kick after that until it’s tough again? Thanks in advance
Forgot to mention- seemed like it had much better compression while kicking, stock was .001 intake (yeah for real), after adjusting, it started first kick and idled, but pretty noisy (sounded like exhaust valve, I’m thinking just too loose or we’re dumb and weren’t at TDC)
The thing is different engines require different tolerances. The problem with the clone engines is manufacturing tolerances can vary and they are not well documented. However the fly wheel should have some sort of marking somewhere for TDC.
@@thejunkman I believe I found what they are standard, intake has a 3 stamped into the valve cap and exhaust has a 6, online says around the same- if anything I’ll just tighten/loosen exhaust by a little until it’s only a little noisy, just needed to know if that was accurately TDC, and there may be a mark but we have to pull the whole electric starter off since they didn’t split the cover there, kinda a pain but might ditch it and the battery to save weight anyway
I have few questions. I got a 110cc Tao engine on eBay for 220 bucks first thing I noticed getting I changed over and the packaging oil changed out, shifter and kick starter on wires hooked up. the engine won't turn unless the spark plug is taken out.. maybe the piston was put in backwards or something?.. there is just no clearance with the spark plug and piston.. could this be corrected? Would it also be a timing issue or what all I know and I'm using the spark plug it came with there is just no clearance. it is locked up when ever the spark plug is in. And this engine is brand new out of the box..
Sounds like an assembly problem. They must have installed the incorrect connecting rod as these engines have some interchangeable parts with different displacements. Essentially there are "long rod" and "short rod" engines depending on the applications. It is also possible they didn't install the cylinder base gasket or it is of the wrong thickness. Same with the head gasket.
@@thejunkmanI told a buddy of mine from across the street the problem and he said either get a shorter spark plug or put a washer underneath the spark plug made of copper or brass so I took one from an old break line fitting made of copper and it kicked over. Gave the spark plug just enough room for the piston . really good factory compression not even broken in yet.
Yes spark plug was out i think I got it cleared them 003 004 with a lil extra play they get right wen I spin the fly wheel them open back up so I think it’s good well see
It depends on the engine and its internal design. It has to do with the slack in the cam chain can get bound up with the tensioners as they are designed to tension the chain in only one direction.
Why do people keep saying you need to get your piston to tdc to check your valve lash,,,, so long as your valve isn't under load,,,,and you only need use your eyeball, it can be anywhere in the cycle!!!!!!!
The intake would probably fine, if on the loose side. The exhaust would be too much clearance I think. I would consult the manual, or the documentation of where you got your head/camshaft for the big bore kit.
@@thejunkman tnx bro. I didn't find anything about valve clearance on manual book. Thats why I want to know about Lifan KPR 165cc EFI accurate valve clearance.
How the heck do I add a photo. Found a page with a manual photo of ALL the valve clearances of ALL the small Honda clone Chinese overhead valve small engines. The page will settle all the bickering once and for all, for EVERYONE
You can use a wire down the spark plug hole to feel the Piston coming up to top dead center and the compression stroke is when both of the valves will be closed
its a 2007 honda supra /wave 100 cc, i install a high lift cam for additional speed which is 6.8 lift, but i dont know what is the exact valve clearance
It's my son's account and no he isnt,don't know why it says that,he's a kid lol, but seriously what are the feeler gauge. 05 I have a .005 would that work, I'm new to this,,excellent video
Hit the kill switch and turn the engine off, that will reduce the sound the motorcycle makes. But seriously, what is your question because I don't understand.
So I recently adjusted the valves on my 110cc engine and now the engine has a tick. Before the adjustment the engine was silent and smooth. What can cause it to tick when it wasn’t there before?
No, because it is different for different engine manufacturers. Consult your manual for the correct spec. This is a general video to cover lots of engine types with this style of adjuster.
For valve settings and other specs for these types of engines, click the link in the description! www.thejunkmanadv.com/how-to-valve-adjustment-tutorial.html
what is the name of your tools use in adjusting your valve?TIA
thejunkman could you put a link to the jam nut and screw tool please. Trying to find the spec for size you have there but you did not mention in comments or video. There are many sizes available and I have the same motor you have there. Thanks
@@FBCPhils
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Very helpful! thanks a ton! Everyone talks about lining up notches but that only works if the cam is installed correctly. This guy is correct in identifying the compression stroke using the tappets. On the yx 140 your sprocket can fit 180 degrees meaning the notch signalling TDC is on the other side and if you match it, you wont be on the compression stroke. If you set you valves while they are actuated, you'll have mad tapping sounds.
I found that out the hard way. Lol. Thanks for clarifying
THANK YOU! This very much helped me with my Grom valves. Never worked on a bike, knew about lining up the "T" but didn't know about Top Dead Center. I had did the valves damn near bottomed out. THANKS! It sounds like it did when I bought it now.
Thanks for the easy to understand tailored-to-all content!
Brilliant video! No other video about this mentions anything about the flywheel cover moving slightly, so i thought something was wrong and had no idea to sort it. Thank you.
For 110cc correct is about 0,03 intake, 0,05exhaust. Not 0,5! 0,05mm
Nicely done, clear and concise, exactly how instruction videos should be.
Hi sir... whats the standard clearance of a 110cc chinese motor???? In mm please.. intake and exhaust?
I teach motorcycle, ATV & snowmobile repair, so videos like these we sometimes use as lessons. At 4min and 29sec into the video you said to "unloosen the jam nut" - well "un-loosen" would be TIGHTEN. I think you meant LOOSEN the jam nut
Freudian-Slip, I guess. Thanks.
Good demonstration but, you can also open the Timing chain cover to verify TDC on the cam
Well technically I guess you could, but the timing marks won't be labeled for you like they are on the flywheel. Also this would assume that the cam is in proper time to the flywheel, so some verification of that would be needed. Good question/observation!
@@thejunkman Ah that makes sense thank you!
@@thejunkman I'm doing my valves on the same engine Right now 😂
Excellent job
Excellent tutorial.....thank you
Nice to see a buell behind ya 👍🏻
Step number one. Make sure when you are doing the valve adjustment make sure the engine is always cold.
Oh god, not another tutorial that starts with music and unrelated footage! I avoid these like the plague. Next!
Thanks for the help mine been off just enough so that i could pop start the bike down a good sized hill most of the time andnit ran fine but if i tried to use the kicker to start it it was impossible it felt like i was kicking against a locked up moter or almost like how hard it is to kick when your doing a comp check \ leakdown . it was bad i actually snapped. A kick starter in half trying to do it. But after the adjustment it was perfact. Im guessing there was too much slack in exhaust valve and it wasnt opening up fast enough makimg it hard to kick
I like how you prectice on pitbike engines there the best to learn from
I have a klx 140L. I'm new to all this.. the bike used to idle almost silently.. now I notice a top end chattery type of noise. It's not major. After getting a service manual I thought valves. I'm having a hard time knowing how much friction you should have on the feeler Guage. Everybody says a little drag. Is that so tight that the next biggest size won't fit? Or will the next biggest size be really hard to force? Well, I think I adjusted too far out. Now it was the same clatter noise but the engine is also running louder. Gonna re-do it today. It definitely needed it but am I dealing with another issue? It still runs good. I just want it to idle nice like it used to. Could it be my timing chain needs replacing? What else goes on these things? Compression is good. It's a 2008. I think I'm the first person to really ride this thing hard. This 12 year old bike was practically new when I got it. Any help would be appreciated. I want to stop this problem before it escalates.
Bro wrote this for no response😂
FYI American Honda use as a go no go technique to sit valves simply explained whatever feeler gauge you’re supposed to use to set your valves do you say that but then you take the next one up if it goes in then you didn’t get your valve adjusted right that’s the term go with the original feeler gauge and no go with the next one up that way your valve is absolutely adjusted perfectly there is no such thing as a Tate setting or a loose setting it either is or it isn’t
Great information, helped for my Z125. 👍
Hey Junkman, great video !
Ive looked every where for clearence on venom x 22 125cc
Thank you!
Thanks friend! I have a cuestion: My Magneto flywheel has the" T" impressed and right next to it, on the right a few mm apart a line mark. I have seen many videos but nobody seems to film the correct position. DO I HAVE TO ALIGN THE "T" WITH THE MARK ON MY VISOR, OR DO I HAVE TO BARELY PASS THE "T" MARK AND ALIGN WITH THE STAMPED LINE JUST NEXT TO THE "T" WITH THE MARK ON THE MOTOR CASE VISOR WINDOW? Hope You can help me out! Thank You very much!
What happens of you just fix it with spning the flywheel to TDC. Can you do that. Thx oo cleanace 00.3 feelers
thankyou
Thank You very Much. Just one question: on the FLY WHEEL I have the letter "T" and just maybe 2 mm further a line mark. Some people and manuals refer to aling the "T" with the mark on the case, but others state You have to pass the "T" mark and algún the line mark with the case... Since I could not see your flywheel, can You help me out? Thank You very much!!!
Where can I find a feeler gauge with the short tips? Each one I find is too long for my TaoTao DB10 and I can't fit it inside the opening to get into the gap. Do you have a part number I can search for?
Look up Motion Pro. they have special feeler gauges for this type of work. It will be for Honda engines as they use that style of valve adjustment.
I bend them and even cut them to get to tight spots, the width is the same every part of the blade.
what valve clearance would you like to a 110cc china mde engine?
thx mr junkman nice.your info nice good setting
Great video! I have a 110 (107cm3) it had some issues when I bought it and it didn’t run. I fixed the cdi wire issue and took off the black and white to disable the security and finally got spark. I put the plug back in and tried to start it it tried to fire then backfired and I shut it off. Now when I try to crack it it’s slow like a dead battery, it was fine before it backfired. I’m stumped other then timing or a valve adjustment?? Was hoping you could help 🙏
When I try to crank it*
I am not sure really. I would have to see it in the flesh to really have any ideas. Could be a simple carburation problem too.
thejunkman it’s a new carb, starter, battery, and all electronics. It’s really struggling to turn over. It was fine before. I just didn’t have shark but it turned over fast. Then once I fixed the spark issue and tried to start it, it then backfired and I had already taken my finger off the starter. Then when I tried to start it again that’s when it became slow. Like something is stuck. If I take the plug out it is a bit faster but not like it was. And both starters and battery are fine. I’ve tried a jumpbox which makes it a little better but noting like it should be. Oh And the positive side gets hot fast. ?
Spark***
It is an electrical issue if the post is getting hot. Sounds like there is a bad connection or too much resistance in the battery lead to the starter. The solenoid could be a culprit too. The back firing might have just been a coincidence and has nothing to do with this.
Excellent and sensitive...
How do you know that the timing chain is loose and needs tightening or buying a new one
When the adjuster is out of adjustment travel.
I dont know where to start. I cant find my TDC the flywheel have T and an F mark i think. The bike is an ssr125cc 2015 year pit bike. How do you know when its at tdc i can't see the piston. i can feel it. I see a mark on the timeing cover is that it
The T is tdc. But you need to be on the compresion stroke.
I did not know about the exhaust adjusting are thay both the same gage. Is compression stroke the exhaust open looking back its kind of funny dame. Do you have to conseder died strock when spining the flywheel. It is still tight whan spining the flywheel. Lost
If you un adjust does that mean you tighten. lol thanks for your video
Wouldn't UNloosening something technically be tightening it ? Loosening it would be loosening it right? 😅
hi junkman...can i ask a question, what's the valve clearance of intake and exhaust if the engine has racing camshaft stage 2? my motorcycle's motor looks like similar on your motor,..but its only a 110cc...and something about valve overlap on motorcycle, do you have any clip on it?
+jesimig paneda just use the standard spec for the CRF50
Bravo for the video. Can you tell me the number of the filler you used? And also if you use the same for both valves or there is a difference for the intake and exhaust. thanks
Its different for different bikes and yes the exhaust is usually a different spec than the intake. Check your service manual for the correct spec.
Hi mate great video. Just after some advice checked my manual cant find owt. I have z155 engine do you know the clearance thank you 🤛🤛👌
hi sir have a nice day to you,I have some question about my chainise motorcycle 110cc,what is the best clearance or what number in feller gauge can I used,my motor is no manual is traction I bout is 2ndhand
Wapa Lumegas did you ever find the answer as I’m wondering this aswell
Hey I know this is an old video, but I want the Buell sitting in the back ground
I still ride it.
How to adjust the valves on Arctic cat 400 2006
If it has the same type of adjusters as this, it's done the same way. Use your manual as a guide for proper specs.
Hi sir i have honda cb 175 menytims iam tried tapit adjust ment but very noise any idea .
Any info on that tool?
Also, nice XB in the background, I've got a 70cc Lifan ct70 and an '09 xb9sx
It is made by Motion Pro
On mine the cam gear is hard to spin, does it it have to do with valves/springs too tight?
Is see valve clearance on spec. 0.07mm(0.003 in) inlet. How about the outlet clearance bro? How many mm?
Its on the website, link in the description. But this will be different for other brands/models. What is listed is for CRF/XR 50 clones.
Good fucking job bro these people don't no shit 😤 thank you
How to correct set intake anda egzhaust for 110 cc
Yes
JunkMan, where did you buy that wrench setup for adjusting the valves, thanks.
These are made by Motion Pro
@@thejunkman Thanks Junkman, I will get some ordered, love the Vids, keep up the good work 👍
Nice video
My engine smokes pretty bad after running a while, likes its getting way too hot.. The exhaust valve was set way too tight. Read somewhere they do this to pass emissions...Do you have any suggestions to keep the engine cool?
Proper jetting will keep the engine within operating temperatures. The only other thing you can do to an air cooled engine is to install an oil cooler if possible. Not all engines have this provision though.
You're on to something. I ran the engine around half choked and it's not smoking and getting hot like it did before. I ordered a new carb with an adjustment screw not just an idle adjustment.
Thanks for the help!! My kids and I definitely appreciate your willingness to help
junkman very nice video and helpful! I have a honda cg 125 how to really determine if the engine is on top dead center i mean there is compression and power stroke and do i rotate the flywheel counterclockwise? thanks man!
Get a service manual for your bike, you will need it to know the specs. There should be some markings on the flywheel but you will have to read in the manual to know which is which, usually it is a "T" but not always.
What would be the spec for 110cc tao tao valve sets
If it is a horizontal engine such as this. The same specs used here. Same as for a Honday CRF/XR50
Hi thejunkman. how to make hi power RUSI MP100? to top of speed up to 125km/hour only. with no side effect of the engine???
hey what type of motor is that it kinda looks like my Yamaha one but I'm not sure what my yamaha is
This is a Zongshen 125. It's an XR/CRF50 clone, only with a manual clutch.
What is tappet clearance for yx140
What if there is no play in the valves at all ?
Too tight.
A good demonstration,very helpfull!
Whats the intake and exhaust spec for the 70cc engine?
They are the same. Link in description.
Hi. Thank you for the video.
A question for you. My starter chain beneath my flywheel broke, so I thought it would be no big deal to pull it and put another chain on it. How can I tell if I put the flywheel back on in the correct position? Right now, on tdc, the timing chain sprocket lines up 180 out. 125cc coolster.
The flywheel is keyed, it will only go on one way.
good day sir. what is the common signs when i need to adjust my valve clearance. ?
Hard starting and noise from the top end/head.
thejunkman is the noise somewhat close to this kind of sound like tick tick tick?
Typically, yes. This can also be a sloppy cam chain, so make sure the tensioner is working. Most of these engines have a jamb bolt that you unscrew to let the spring apply the tension and then tighten it back up to secure it.
thejunkman thank you so much sir. i will subscribe to your page now.
Don't forget to check out my website. I have more information there.
are you turning the engine backwards, just checking cause i know some engines can jump timing doing that?
No
Hi, could you plesae help me? i have a similar engine from a TAOTAO 110cc dirt bike. It was working great in the begining but then it started to bog in high revs. I bought a new carburator, changed the spark plug and checked the valve clearance. But still its the same. Have you heard of a problem like this?
Yes. You need to tune that new carburetor. Watch my jetting video. For more help
Hi nice video sir. I want to ask one question. how to identify that that the crankshaft bearings are failed or it is timing chain which is making rattling noise?
Its probably the cam chain tensioner
thejunkman thank you sir.
I have a tt-r 90. If I kick it over 3 times good compression. More than that it losses compression. Bike doesn't start. Any ideas?
Thats really interesting, did you ever figure it out?
I'm working on the exact same engine but it is one of the Chinese clone 110 and they do not have a book or a manual what was your adjustment for that engine.002
Put them around .003" intake and .005" exhaust as a start. If it is noisy after warm up, tighten them up a bit.
How can you tell if they need adjusting by sound or other means
Well if you are unsure, get out your feeler gauges and measure them. However some symptoms could be; hard starting (when everything else carb/fuel and ignition check out fine), sound, loss of performance when hot (again as long as other systems check out OK)
" DONT TRUST THE INTERNET",
dude, you are the internet
Hmmm, how insightfully meta. I can't argue with that.
@@thejunkmanthejunkman posted four years ago, and yet replying within a week. how thoughtful of you
@@FormerNine I have been on RUclips for almost 14 years now. I have replied to *almost* every comment ever on my channel. I have always felt my viewers deserve it if they post a constructive comment.
@@thejunkman what does it mean if my ATV is leaking oil from the bottom valve adjustment cover
I can't insert the feeler gage. I don't won't to brack the seal if so. Is it ok to leave cam settled with the jam nut. I don't really want to misswith stuff. I'm reading my manual I can't find anything.
Can you type normal sentences? I am having a hard time reading and understanding what you are saying or asking. Sorry.
should I break the seal of it has it by default
I am still not understanding what you mean by "break the seal"
Thanks for your video. I have a Honda CB1 (125) 2018 model, and Model# CGX 125 and have been getting loud tapping and ticking for a while now and it's driving me crazy. The valves are set to 0.08mm and 0.12 mm intake and exhaust respectively. I have changed outer clutch basket and crankshaft+bearing and I still hear that annoying tapping and ticking. What's your take on it?
I'd have to hear it
@@thejunkman Please click link for video ruclips.net/video/ZewQEFYLvpA/видео.html
Sounds pretty normal to me for that type of engine.
@@thejunkman Really! IDK there is definitely some distinct tapping and clicking. Maybe wasn't too clear in video. I've listened to other bikes like it and there is a huge difference. Others are much softer
(just as mine was before). Mine is noisy when compared, especially when I am accelerating.
@@thejunkman Hmm idk. Doesn't sound normal to me...thanks for your time and insight though.
Hey i have the same engine and it has sat for some time, i have changed the carburetor and adjusted the valves but it still backfires a lot out of the exhost and sometimes out in the carb, do i need to change the valve seals or what should i do?
Probably a jetting problem. Might be too lean.
thejunkman when i looked at the sparkplug and a diagram that shows lean and rich spark plugs i looks carbon fouled.... i have tried adjusting the fuel mixture screw but nothing works....
That is only for idle speed. You need to change the jets. I have specific videos and webpages on that.
Question: After you complete the adjustment on the top valve (compression stroke), do you need to rotate the piston in order to adjust the bottom valve (exhaust stroke)?
At true TDC both valves are closed, that is when you adjust both to their proper spec (found in the manual as every engine manufacturer is just a little bit different)
@@thejunkman Thanks so much for your quick response, Mr. Junkman! I have the owner's manual for my Honda 50 C110 and will refer to that for the proper gap. And, I will follow your procedures. Your instructions are awesome! Thanks, Salvatore
@@thejunkmanthats what I came here looking for, thanks man
@@christopherlongstreet7904zq
Ok quick question, my buddies Apollo 250 (Honda 230 clone) we just adjusted valves, set intake to .004 (very slight drag on .003 feeler gauge, don’t have a .004) and exhaust to .005 ish, when you pull the feeler out of the exhaust gauge and watch the valve and rocker arm it kind of “falls” back down, is this normal? We weren’t 100% sure that we were at TDC, there is an access hole to the flywheel but no mark anywhere on it, but we watched the valves and turned it over with no spark plug, intake valve opened, kick got harder to move, went slow and then right after the puff of air out of the spark plug hole do you stop? Or does it need that little 1/4-1/2 kick after that until it’s tough again? Thanks in advance
Forgot to mention- seemed like it had much better compression while kicking, stock was .001 intake (yeah for real), after adjusting, it started first kick and idled, but pretty noisy (sounded like exhaust valve, I’m thinking just too loose or we’re dumb and weren’t at TDC)
The thing is different engines require different tolerances. The problem with the clone engines is manufacturing tolerances can vary and they are not well documented. However the fly wheel should have some sort of marking somewhere for TDC.
@@thejunkman I believe I found what they are standard, intake has a 3 stamped into the valve cap and exhaust has a 6, online says around the same- if anything I’ll just tighten/loosen exhaust by a little until it’s only a little noisy, just needed to know if that was accurately TDC, and there may be a mark but we have to pull the whole electric starter off since they didn’t split the cover there, kinda a pain but might ditch it and the battery to save weight anyway
Why counterclockwise?
To take the slack out of the chain.
I have few questions. I got a 110cc Tao engine on eBay for 220 bucks first thing I noticed getting I changed over and the packaging oil changed out, shifter and kick starter on wires hooked up. the engine won't turn unless the spark plug is taken out.. maybe the piston was put in backwards or something?.. there is just no clearance with the spark plug and piston.. could this be corrected? Would it also be a timing issue or what all I know and I'm using the spark plug it came with there is just no clearance. it is locked up when ever the spark plug is in. And this engine is brand new out of the box..
Sounds like an assembly problem. They must have installed the incorrect connecting rod as these engines have some interchangeable parts with different displacements. Essentially there are "long rod" and "short rod" engines depending on the applications. It is also possible they didn't install the cylinder base gasket or it is of the wrong thickness. Same with the head gasket.
@@thejunkmanI told a buddy of mine from across the street the problem and he said either get a shorter spark plug or put a washer underneath the spark plug made of copper or brass so I took one from an old break line fitting made of copper and it kicked over. Gave the spark plug just enough room for the piston . really good factory compression not even broken in yet.
@@thejunkman the head gaskets were all there they look sort of thin but it runs fine now
Wen I spin the wheel the valves get stuck close can’t spin wheel or flywheel could they be to tight ?
Did you remove the spark plug? Too tight and the valves hang open.
Yes spark plug was out i think I got it cleared them 003 004 with a lil extra play they get right wen I spin the fly wheel them open back up so I think it’s good well see
Seems about right. Let me know how it goes. I sometimes Live stream so you might want to check that out.
I have a Chinese 110cc pit bike what feeler gage spec can I use
There are different specs for each valve .003" intake and .005" exhaust
Hi sir. Whats the standard clearance of a 110cc chinese motor? In mm please.. intake and exhaust?
+Alpha Wolf look in thw comments. I have given them before.
Hello, I always hear “don’t turn the flywheel in the other direction “ is there a reason for this? If so could you explain it to me?
It depends on the engine and its internal design. It has to do with the slack in the cam chain can get bound up with the tensioners as they are designed to tension the chain in only one direction.
thejunkman thanks a bunch man !
What adjustment tool size do I get for boom vader
What is a "boom vader" ? Is that like Darth Vaders younger brother?
Why do people keep saying you need to get your piston to tdc to check your valve lash,,,, so long as your valve isn't under load,,,,and you only need use your eyeball, it can be anywhere in the cycle!!!!!!!
Because most people don't understand how this all works, so having a concrete position increases the comfort/confidence level in performing the task.
What happens when the valvs to tight
It will hang open and not fully seal, thus be hard to start (especially when warm) and reduced power output.
Bro...what is about 165cc.? 0.08 mm for intake and 0.12mm for exoust is correct?
The intake would probably fine, if on the loose side. The exhaust would be too much clearance I think. I would consult the manual, or the documentation of where you got your head/camshaft for the big bore kit.
@@thejunkman tnx bro. I didn't find anything about valve clearance on manual book. Thats why I want to know about Lifan KPR 165cc EFI accurate valve clearance.
hi can i ask a question, do you need to adjust the valve clearance during break in? i heard a ticking noise on my engine when it gets hot.
Yes. Break in is when the new parts in the engine are wearing together.
+thejunkman but does that affect the performance of the engine?
Of course it does. It means the valves won't open and close at the correct time because of the extra clearance.
TheMichael Arch yes
Of course gonna save a lot. Mechanic ask from 500 dollars to do it on mine ☹️
Still not enough explanation.
Junk man what should I set the valves at on a 2016 ssr125
+Peter Therriault check my website i have this spec on this
What size are you using (00.0)
The size that is appropriate for this engine. Yours might be different.
To set valve clearances which mm guage will be used ?
+Deepesh Tiwari the thickness specified in the manual for your application. This is not a universal measurement.
i think 0.010 mm required for this...
DEEPESH TIWARI if 110cc how much is the clearance?
what is the standard clearance...?
Check your service manual. It varies by engine design.
Where can I buy the tool for valves adjustment?
Motion Pro sells it
Thanks
What gap size is needed
Depends on the engine. Check your service manual. They are not all the same.
How the heck do I add a photo. Found a page with a manual photo of ALL the valve clearances of ALL the small Honda clone Chinese overhead valve small engines. The page will settle all the bickering once and for all, for EVERYONE
Link is in the description
it's not very clear how to know what the compression stroke is
You can use a wire down the spark plug hole to feel the Piston coming up to top dead center and the compression stroke is when both of the valves will be closed
how do you know the valves are closed?
Turn the engine and watch the valves open and close through the 4 cycles. Stop after the intake closes and the piston is moving up.
thank you...i need to do this on my honda ps50
can i ask question ? so if you install a higher lift cam ,what is the correct valve clearance , need answer immediately
Ask the cam manufacturer, otherwise go with the bikes recommended specs. Since I don't know what bike you have I can't tell you.
its a 2007 honda supra /wave 100 cc, i install a high lift cam for additional speed which is 6.8 lift, but i dont know what is the exact valve clearance
the engine is like the same as the one in the video
sangetsu ichigo Use the specs for a CRF50
Yes fuck yes! Thanks Man
What's the feeler gauge. O5???
You are not Tseries ;)
It's my son's account and no he isnt,don't know why it says that,he's a kid lol, but seriously what are the feeler gauge. 05 I have a .005 would that work, I'm new to this,,excellent video
In this video it is a .005, but that might not be right for your application.
how reduce sound motorcycle
Hit the kill switch and turn the engine off, that will reduce the sound the motorcycle makes. But seriously, what is your question because I don't understand.
Silencer
the markings has not clear enough to see
"Has not clear enough to see" I don't understand?
there is a T mark. you ll see it
So I recently adjusted the valves on my 110cc engine and now the engine has a tick. Before the adjustment the engine was silent and smooth. What can cause it to tick when it wasn’t there before?
you loosened them lol
I mean I can't even go to the dealer where I bought the bike and buy a f****** service manual because it doesn't exist
Didnt even say the gage?
No, because it is different for different engine manufacturers. Consult your manual for the correct spec. This is a general video to cover lots of engine types with this style of adjuster.