This is the first video I've seen that actually shows what's going on in there in real time. Thank you for the painstaking effort of putting this together, this should help me out greatly with troubleshooting!
I’ve had to get to know how carbs works as I now own a bike with one. I used to hate them, but now that I understand how one works, I cant hate such a beautifully thing. And this explanation was just amazing, so helpful!
Nice clear explanation and animation to show air and fuel flows through the carb. Now I understand why my bike ran so badly below 3500rpm. Idle jets were partially clogged after the bike had sat a while and the fuel went stale. All cleared and running lovely now. Thanks for posting this video.
Thank you for making a very simple explanation on how this functions with an in depth look on the internals operating. Please make more videos on troubleshooting issues like no fuel or bad compression in the cylinders.
Very clear and concise and yet very quick to point! Perfect! What more could you ask for? Thanks for a brilliant video, the information it contains is precisely what I was looking for 👍👍 Cheers!
Awesome video. The next best thing for someone wanting to learn is to go into their shed and grab their lawnmower or blower and carefully take apart their carburetor. While you’re at it, clean out the bowl and jets
Thanks for this useful information. I heard CV carbs are not as instantly responsive to throttle openings, this video has clearly explained why that is.
Wow I came here wanting to understand it, I didn’t know it was that simple, if you have more small engine stuff I’m subscribing. I need this info thank you!
this is a great video for all of us old school bikers! the only thing I see missing is the operation of the acc. pump circuit.....Great Job... keep up the super job.......
Definitivamente este es una de las mejores animaciones de como se explica el funcionamiento del Carburador, creo que desarrollar vídeos como este son los que más llaman la atención.
Incredible explanation! Just curious though, isn't this showing the function backwards from what it should be? It seems like the flow of fuel and air should be going from left to right as it seems the right side is where it bolts to the engine.
Hi Cez. I'm making a video showing the disassembly and cleaning of the carbs on my Hyosung (it had been parked in the garage un-started for 2 years). I plan to link to this video for an in-depth description of how CV carbs work. I'd like to use a still image of your diagram with red arrows/circles showing the locations on my front carb that were blocked with old fuel sludge. Is that acceptable? Thanks. -TWW
Any info would be appreciated. I bought a 100scooter with only 700 miles. Runs and idles, but no power. When I took off cowling, discover the vac line from manifold disconnected from carb and blocked. When I reconnected it, it stalls and won't start until I remove the vac line, and then it goes back to running on the pilot jet. The vac line is the one that is supposed to work the slide.
so the butterfly or venturi should be completely closed for the idle since there is a separate flow of air and fuel. mine wont idle and i think this will help. im also curious about the choke. when i bought my bike i was told that the choke was needing to be pulled to a specific distance for it to engage and properly enrich the fuel mixture. when the choke is fully engaged it doesnt seem to raise the rpms of the idle- when the bike did start. it would take a lot of effort to start and wouldnt idle very well unless i applied throttle until the engine could sustain or until i found the sweet spot on the choke. how am i to fix the choke to where full joke means that the fuel flowing through the carb is full flow? im worried about taking the whole thing apart since parts are scarce for my motorcycle, however i am curious on how to make this thing run reliably.
i just finish my service calbulator change all kit and i start now with open start pluger and working wehn i close the air working slow if i try to open fuel gas then stop that mean to much fuel coming inside to calbulator???need to make less the needle ????
How come when I twist the throttle with the engine off it squirts gas from a nozzle into the carb? If the motor isnt turning there should be no vacuum to pull gas in?
I installed a hsr42 on my 1995 springer softail 80” evo. The motor is stock with Vance & Hines short shots and an aftermarket air cleaner. I have a #20 pilot jet and #165 main jet. 2 turns out on the air fuel mixture screw. I’m having a hard time getting it to idle slowly and it seems like the bike gets hot. Originally it had a 160 main and 25 pilot jet and was blowing flames out exhaust at idle. Changing to the 165 and 20 has eliminated that and it revs without miss from idle on now problems just seems like it idles higher than with the original cv carb and seems to run hotter? Any advice on what I could try or change would be greatly appreciated. Thanks
Awesome video/explanation. Now I'm wondering if the slide is controlled by vacuum, wouldn't this create poor low rpm response? I have this carb (cvk34) on an older non-running Kawasaki dual sport that I am restoring.
It does, but it makes for a "softer ride " experience. I've also installed a mikuni carb where the slide is controlled directly by the cable and it makes for a much more aggressive ride
People drill out the holes at the base of the slide or drill and tap for smaller adapters, even dynajet says to do it in alot of their kits for increased acceleration supposedly Harley guys say it lets air bleed there faster but I think they the wrong idea if this is how a cv works wouldn't the larger hole allow the vacuum force to bleed off more, slowing the slide lift speed?
So how far into the Throttle opening does the AFM screw affect mixture? Is it really just an Idle mixture adjustment or complete throttle range mixture adjustment?
Hello, good video:) Q: 06 sportster xl1200c Vance and Hines short shots, large performance air breather, 45 pilot jet - 190 Main jet. 2 turns out a/f screw. Not as smooth as I would like at steady throttle - a bit jerky. Been playing with it, seemed to have smoothed out with the 190 Main from 180...would a 195 Main help? Thanks in Advance
You mean when we twist full throatal only air enters the cylinder through venture first for some time and then fuel is sucked through main jet and get mix with air..???
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This is the first video I've seen that actually shows what's going on in there in real time. Thank you for the painstaking effort of putting this together, this should help me out greatly with troubleshooting!
I'm doing a motorcycle mechanic apprenticeship. The training material told me to watch this video. I can see why, brilliant explanation. Thanks!
This is the best explanation of diaphragm carburators i've found so far. Thanks
+Simon Nomis thank you man!!!
Same
IVE BEEN LOOKING FOR A SIMPLE EXPLANATION FOR A WHILE. This is so much more simple than reading the service manual to understand it.
I’ve had to get to know how carbs works as I now own a bike with one. I used to hate them, but now that I understand how one works, I cant hate such a beautifully thing.
And this explanation was just amazing, so helpful!
Finally!!!! A tutorial that has relevance to real life... so brilliantly explained!!! thanks
+Chris Horton thank you very much!!!
Nice clear explanation and animation to show air and fuel flows through the carb. Now I understand why my bike ran so badly below 3500rpm. Idle jets were partially clogged after the bike had sat a while and the fuel went stale. All cleared and running lovely now. Thanks for posting this video.
That's amazing. I've been trying to figure out how my carburettor works for days after I removed it for cleaning. Thanks man really good animation.
Thank you for making a very simple explanation on how this functions with an in depth look on the internals operating. Please make more videos on troubleshooting issues like no fuel or bad compression in the cylinders.
Agree, that was a most effective and efficient explanation of a Carburetor Operation I have seen. Excellent graphics and animation!!😊👍
Literally the quickest and best description of a cv carb. Cheers!
Such a good video as it actually shows where each part on a carb in real life. Thanks!!
Thank you!!!
Fantastic explanation. Been riding bikes (on and off) for decades and didn’t really understand this. Now... please make a similar video for points. :)
This is the best video of how a carburetor works, congratulations and thank you so much for making it
Thank you very much 😊
Very clear and concise and yet very quick to point! Perfect! What more could you ask for?
Thanks for a brilliant video, the information it contains is precisely what I was looking for 👍👍 Cheers!
Great video! I was confused on how the piston can open up when the engine is revved. Now I understand, it works on vacuum. Thank you!
Awesome video. The next best thing for someone wanting to learn is to go into their shed and grab their lawnmower or blower and carefully take apart their carburetor. While you’re at it, clean out the bowl and jets
Wow - this is the best explanation I have ever seen on how a carb works. Thanks!
Thank you :)
Agree that was one of the best cv carb explanations ive seen
Great video and cool music. The animation and clear explanation really helped me to understand my carburetor. My 4-Wheeler I'd finally running again.
Thanks for this useful information. I heard CV carbs are not as instantly responsive to throttle openings, this video has clearly explained why that is.
One of the best tutorial available in RUclips.. shall you please reply on which software you did this
Very well explained 👍🛠 , most people take longer then 2:30min and still it’s not so clear as this 😂
Wow I came here wanting to understand it, I didn’t know it was that simple, if you have more small engine stuff I’m subscribing. I need this info thank you!
Outstanding and easy to understand!!! Great work!
hands down the best carb explanation video
Still one of the top 5 videos on how carbs work, gratzi
thank you very much most people replace CM125 diaphragm with with CG125 carb they say it's not affecting but it affecting performance lot
Awesome video... I am new to dual carbs, I had a good idea how they work but now i know!! Thanks a lot!!
this is a great video for all of us old school bikers! the only thing I see missing is the operation of the acc. pump circuit.....Great Job... keep up the super job.......
Thank you very much, you are right, didn't think of it
Most CV carbs don't have an accelerator pump.
Definitivamente este es una de las mejores animaciones de como se explica el funcionamiento del Carburador, creo que desarrollar vídeos como este son los que más llaman la atención.
This video is amazing, Best explanation of a CV carb ever.
Nice work man. We need to appreciate your work.
Thank you so much!!!!
Very simple explanation.....this is the best tutorial,I have ever seen..thanx
Incredible explanation! Just curious though, isn't this showing the function backwards from what it should be? It seems like the flow of fuel and air should be going from left to right as it seems the right side is where it bolts to the engine.
Quick, clear and informative, thank you! 👍
Wow this video was awesome and straight to the point, so helpful thanks!!!
Amazing! I'm still watching this up to now! ❤
That is an excellent illustration!!! Well done!!!
Awesome video, great diagram and explanation!
Awesome demonstration brother!
thanks a lot for this, it made it really simple to understand! great diagrams also!
This video is amazing thank you for taking the time to make and share it fantastic 😄👍
how about a slow jet with a ruber plug on top. what is its function
Excellent video, I have recommended it to my under grad students as a study material.
Excellent video man!!! You make very good tutorials and DIY.
+Fellipe Renno thank you very much!!!
Hi Cez. I'm making a video showing the disassembly and cleaning of the carbs on my Hyosung (it had been parked in the garage un-started for 2 years).
I plan to link to this video for an in-depth description of how CV carbs work. I'd like to use a still image of your diagram with red arrows/circles showing the locations on my front carb that were blocked with old fuel sludge. Is that acceptable?
Thanks.
-TWW
This is excellent! Good on ya Custom Cez! Thanks!
Nice video! Great explanation to how these carburetors work .. Thanks
+Jimmy McFaden you are welcome Jimmy!!!
Any info would be appreciated. I bought a 100scooter with only 700 miles. Runs and idles, but no power.
When I took off cowling, discover the vac line from manifold disconnected from carb and blocked. When I reconnected it, it stalls and won't start until I remove the vac line, and then it goes back to running on the pilot jet. The vac line is the one that is supposed to work the slide.
so the butterfly or venturi should be completely closed for the idle since there is a separate flow of air and fuel. mine wont idle and i think this will help. im also curious about the choke. when i bought my bike i was told that the choke was needing to be pulled to a specific distance for it to engage and properly enrich the fuel mixture. when the choke is fully engaged it doesnt seem to raise the rpms of the idle- when the bike did start. it would take a lot of effort to start and wouldnt idle very well unless i applied throttle until the engine could sustain or until i found the sweet spot on the choke. how am i to fix the choke to where full joke means that the fuel flowing through the carb is full flow? im worried about taking the whole thing apart since parts are scarce for my motorcycle, however i am curious on how to make this thing run reliably.
Thanks 👍 do you know why gas would be getting gas in the front diaphragm area where you take the cover off?? I have a 95 Yamaha Virago XV 535 SG
Does the pilot jet still working all the time while full wide open throatal and give same amount of af ratio ????
i just finish my service calbulator change all kit and i start now with open start pluger and working wehn i close the air working slow if i try to open fuel gas then stop that mean to much fuel coming inside to calbulator???need to make less the needle ????
Absolutely brilliant! Great job
Such animation. Impressive!!
Hi does the engine have to be running to make the the slide go up and down with diaphragm
thank you👍
Good content ! Very easy to understand.
How come when I twist the throttle with the engine off it squirts gas from a nozzle into the carb? If the motor isnt turning there should be no vacuum to pull gas in?
Nice animation and explanation, thanks!
I installed a hsr42 on my 1995 springer softail 80” evo. The motor is stock with Vance & Hines short shots and an aftermarket air cleaner. I have a #20 pilot jet and #165 main jet. 2 turns out on the air fuel mixture screw. I’m having a hard time getting it to idle slowly and it seems like the bike gets hot. Originally it had a 160 main and 25 pilot jet and was blowing flames out exhaust at idle. Changing to the 165 and 20 has eliminated that and it revs without miss from idle on now problems just seems like it idles higher than with the original cv carb and seems to run hotter? Any advice on what I could try or change would be greatly appreciated. Thanks
Questo video è fantastico! Grazie mille amico!
Awesome video/explanation. Now I'm wondering if the slide is controlled by vacuum, wouldn't this create poor low rpm response? I have this carb (cvk34) on an older non-running Kawasaki dual sport that I am restoring.
It does, but it makes for a "softer ride " experience. I've also installed a mikuni carb where the slide is controlled directly by the cable and it makes for a much more aggressive ride
People drill out the holes at the base of the slide or drill and tap for smaller adapters, even dynajet says to do it in alot of their kits for increased acceleration supposedly Harley guys say it lets air bleed there faster but I think they the wrong idea if this is how a cv works wouldn't the larger hole allow the vacuum force to bleed off more, slowing the slide lift speed?
i remove the carbutor, the diagpram doest response to trotle, is it only response when engine run?
Holy shit where was this all those years I was trying to tune my atv!?! Now im a pro
a picture is better than a thousand words thanks
wow...thanks for the excellent animation and explanation, great work..
So how far into the Throttle opening does the AFM screw affect mixture? Is it really just an Idle mixture adjustment or complete throttle range mixture adjustment?
Por fin alguien que lo explica como la gente !!!
Gracias por el cumplido, le agradezco mucho!
Brilliant, very well illustarted and explained. Thank you
You're very welcome!
My 125 have poor power on low rpm its possible adjustment this carburetor?
This is excellent. Thank you!!
Thank you :)
Nicely done sir!
well done!!! thank you for the clarity!
The best explained video amazing work!
Hello, good video:) Q: 06 sportster xl1200c Vance and Hines short shots, large performance air breather, 45 pilot jet - 190 Main jet. 2 turns out a/f screw. Not as smooth as I would like at steady throttle - a bit jerky. Been playing with it, seemed to have smoothed out with the 190 Main from 180...would a 195 Main help?
Thanks in Advance
So the pilot jet always on although at high rpm ?
とても分かりやすいです。
ありがとうございます！😭
Great explanation, but I have problem with slowing down engine after realising throttle. Do you have any advice? Tnx
Is it a air screw or petrol screw or volume control screw please tell me the difference of these words
Thanking you
What symptoms are there if the piston doesn’t move?
Thank you, really cool explanation.
You mean when we twist full throatal only air enters the cylinder through venture first for some time and then fuel is sucked through main jet and get mix with air..???
what happens when the slide is damaged or worn ?
What is the problem of my CV carb,there is no idle when the engine is cold but when the engine is warm,the idle is normal.
Great explanation dude
Thanks 🙏
Wow, great explanation.
Great little video
562 likes only ? This vid far better from any othe youtuber for learn
Thank you man! I think that the youtube algorithm is not helping me out one bit ;)
@@CustomCez sad
Really dope video ! Thankx bro !
what a legend. great vid.
Awesome video! What program was used for the animation?
Thank you! Adobe After Effects and Premiere Pro :)
Great job, great video. Thank you.
thank you!
Very well done
Thank you :)
finily some good explanation, tnks
Excellent video
My bike dies when I open the throttle why ? Please help its really urgent.
Great video!