How does CV carburetor work animation DIY adjustment screw - ep26 - Roma Custom Bike
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- čas přidán 31. 05. 2024
- In this episode Custom Cez explains how does the CV carburetor works and how to adjust the mixture screw.
With the help of a detailed animation, we can observe how the carb works from the inside.
After publishing the original "Cv carburetor rebuild" ( • How to tune your CV ca... ) we have received many messages requesting more info, so we decided to produce this video to properly finish the job.
Among the messages we were contacted by CV Performance with some suggestions. You can reach them on their site:
Vacuum piston assembly: www.cv-performance.com/harley-...
Then Custom Cez goes through the process of adjusting the idle mixture screw to optimize engine performance and throttle response.
Don't forget to leave your suggestions in the comments and to share our videos in your social networks.
What did we do:
0:00 - Intro
1:53 - jets cleansing
2:23 - vacuum slide and diaphram assembly replacement
3:37 - what is the idle mixture screw
4:08 - how does the cv carburetor work animation
4:45 - how does the idle mixture screw work
5:45 - how does the carburator's choke work
6:03 - functionality of the mixture screw
7:00 - location of the carburator's mixture screw
7:45 - theory of the idle mixture screw: lean vs enrich mixture
9:30 - idel mixture adjustment procedure
13:02 - are your jets the right size for your engine?
13:28 - are your gaskets air tight?
13:58 - diy exhaust fumes pumping system
15:20 - ending
!!! New Carburetor video "CV vs Mikuni:
• CV Carburetor VS Mikun...
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Made in Rome, Italy we take a look at an European approach to modifying and customizing an Harley Davidson with Custom Cez, an amateur customizer in his home shop.
An RMPnet.com production, music by FAS.
Visit the show homepage www.romacustombike.com/
or the episode page:
www.romacustombike.com/web-ser...
Check out our social platforms:
/ romacustombike
/ customcezusa
/ romacustombike
/ customcez
Download the official soundrtack:
iTunes: goo.gl/WTDraf
Spotify: goo.gl/NgwgjV
Deezer: goo.gl/HGihfX
Tidal: goo.gl/4x1iyo
Google play Music: goo.gl/HuHRLB
______________________ - Auta a dopravní prostředky
Those graphic pictures, along with verbal explanations, made for a clearer picture of how the entire fuel delivery of the CV carb works. Great presentation, once again.
I agree. This really helped me after several videos from others, where I didn't manage to grasp the concept.
Yup very good
Thank You 👍🏻 just what I need to see. Cheers from Western Australia 🇦🇺 😎 ✌🏻
Probably one of the best explanations of how the cv Or any carb for that matter, works that I have seen.
The well executed use of graphics really added to getting a clear message across and helped give "life" to the mysterious internal workings of a carburator. A picture is worth a thousand words and video is many more than that.
I appreciate that you are not afraid to share when it is pointed out something you have previously is in error, You are only human after all, and we all make mistakes. How one handles being called out on one says much about a persons integrity.
+TheLpjoe thank you so much man!!! I think that documenting mistakes is the best way of understanding how stuff works 😊
Yes, IF he had explained it accurately. He completely left the accelerator pump out and without it the carburetor doesn't work!!
Just seen this video, I have been a mechanic for 40 yrs and this is one of the best and easiest to understand explanations of the CV carb and its adjustments , well done chaps
My bike isn't idling so well and i came here looking for some help, and i digged gold. Astonishing and clear explanation.
Thank you so much :)
I am 24 years old out of Mississippi and this is way cooler than anything I've ever seen in a classroom or in Hollywood keep up the good work bro 🤙🤘
thank you. your explanation was the ABSOLUTE BEST ONE on how carburetors work from the MANY videos that i'd watched. it seems that the CZcams ALGORITHM automatically picked up your video and put it as recommended in my front page - after i had watched so many videos trying to figure out how carbs work and still not getting a clear picture.... and MAGICALLY YOUR ABSOLUTE BEST EXPLANATION APPEARED out of the blue to the RESCUE !!! MANY THANKS.
Man in one second I knew you were Brazilian. I went to San Paulo in 94 and it was the best time of my life. Your video was surprisingly informative thanks a bunch!
+Micscience Italian :-) i'm Italian and you are welcome. Thank you for watching it!!!
Well if its not Portuguese, then Italian would be the closest choice in my opinion but boy was I off. Anyways thanks for sharing good luck!
Of all the people out there explaining about the carburetor ....your the best man!!!...thanks mate ......
Thank you so much man!!! Appreciate the comment!! Happy holidays to you and your family!
How Italians always understand to make things actually helpful. Because I actually understood what this screw really does.
the animation diagram explained EVERYTHING I didn't know about how these carburetors work, thank you!!
It is by far the best cv carb function explanation on CZcams, if not on the internet! CONGRATS!
Thank you so much man!!! Truly appreciate it
Where has this channel been my whole life? This guys energy is much needed.
Other biker Channels take notes! 👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾👍🏾
I've watched my share of how to videos and will say hands down your video on mixture adjustments is the most informative I've ever seen. Excellent presentation, easy to understand and follow. Great job.
Man I appreciate your delivery methods, you're a hell of a teacher
thank you so much Andrew
Brilliant. Have just stripped and cleaned my four CVK40's on my 96 ZZR1100. Now checking idle and slowly getting to grips with carb balancing. This video has helped me a lot. Thank you my friend.
So glad Stuart! Thank you
It's a good man that accepts corrections and makes adjustment to his process when good information is offered.
Bonus!
A gud instruction vid.
rc
Thank you Rusty, I always try to take in good info when is actually good :)
Yessir !
Learn more, better every day !
:-)
rc
This video saved my day man. I figured out my vent hose was clogged. This was causing the pressure in the float bowl to hold the needle open and making my ATV run super rich and backfire and bog down... If I hadn't seen those animations I would have never thought to check the vent hose.
That's great man!!! Very glad it helped in figuring it out!!! :D
You SERIOUSLY need to have a FIRE EXTINGUISHER handy when doing this! Great video. Just make sure to include safety. I discovered an exhaust header leak while doing this. It was dangerous, terrifying, and nearly disastrous because I didn't know where my fire extinguisher was.
+Bruno “Richard” Bronosky hehe, I do have one handy :)
I love this video so much. My first comment on this video was a year ago (which you replied to, thank you). I have been back about 4 times since. I use it to "get my head straight" before every carb task I do, or carb advice I give. Much love, brother.
+Bruno Bronosky my man!!! Thank you soooo much!!!! I really appreciate your comment cause it makes me very proud of my work. Thank you brother!
best carburetor video, the animation is perfect to explain mostly everyting about it.
I've worked on a lot of motorcycle carbs and heard a lot of people talk about them, but your explanation with the video graphic on how CV carbs work is probably the best I have ever seen. I have subscribed to your channel and look forward to watching the rest of your videos. Outstanding video.
Thank you so much J.E. :) I really appreciate your comment!
No problem, sir. I look forward to seeing more from you.
I have to say that ive been watching utube over 2 years. (Retired got back into motor biking) have 10 motorbikes here in philippines (american guy from northern ohio) got time. so im gonna keep my bikes up myself. Have to say that was the best video about carbs i have ever seen! ! ! Keep puttin out content i sent this vid 2 all my family n close friends keep up your fine work thanx
Best comment ever man!!! Thank you so much!
How does a guy from Ohio end up 9n the Philippines? I've heard theres a big bike scene over there rn. G.I.?
Best video I have seen so far explaining this. I really like the precise animations showing exactly what is going on. Very helpful. Thankyou
You made it extremely easy to understand how they work, especially with the animations. Thanks!
sei forte! parli benissimo inglese e hai spiegato tutto molto chiaramente, complimenti
Trying to figure out fueling issues with my atv with a CV carb. This video is exactly what I needed to understand how this type of carb works! Thank you for posting
You’re a certified bad ass for making this video so detailed. Very cool. Thank you my friend.
that animation is amazing and totally helps to illustrate the easily confusing functions of a carb.
+Mr Sexy Time thank you very much!!!
This video is amazing! Especially the part where you overlay the inner workings over the carb around 4 mins, beautiful. Good job, you're a great teacher!
Thank you very much!
Very well done Sir!!! Amazing analysis in an easy to comprehend way. Thank you.
This is an amazing video for these carbs!!! I have a Honda Nighthawk 750, and Im getting into tuning the carbs. I needed this information just to wrap my head around whats going on at different throttle openings. FANTASTIC information! Thank you!
I like how you are delivered your message 👍
That animation, along with your narration was so helpful!!
Hello Cez, thanks for all the great carburetor education. I have converted a dual carburetor Virago to a single CV40 and although it's not a final driving bike, your videos have definitely been a big part of the progress! Thank you my brother!
Hi Carlo! So happy I could be of help :) I had a Virago 750 myself in the States and they are fun to drive!
Hands down, you have the best explanation of how a carburetor works. Very very well done. Thank you so much.
Thank you very much Andrew!!! I really appreciate it 😊
Great video. Diagram and adjustment walk through were both extremely helpful!
Awesome, thank you for explaining it like you are talking to someone who is not familiar with terms used by a mechanic or a seasoned DIY mechanic.
Hey man, total bike noob. Bought a gpz 305 that hadn't run in 15 years and got it going and set and cleaned the carbs with the help of your vids. Cheers big man.
Glad to be of help 😊 let me know how it goes!
You're a really good teacher you probably hear that all the time.
no first time and I appreciate it :) thx
That was a great video. As a visual learner, that was exactly what I needed. Thanks!
Very well explained, one of the best I've seen. good description of how it works and going to the basics. Even though I have never own a Harley (and never will) the explanations works for any Keihin. Congrats.
from 4:00 minutes to 6:30 minutes was the best and most understandable explanation of how a carburetor works that I have ever seen. And the animation with the music was excellent as well, I feel like that section of the video deserves to be taught in tech schools around the world. It would of helped me out A LOT if I had seen that as a kid, but I didn't... So I learned the long hard way by breaking things lol. Good job
- An excellent presentation and explanation as to
how carburetor works. Thanks for adding valuable information to our knowledge. Regards
Awesome video man! amazing detail. I really like how you did that animation of how it works! keep it up!
Thank you Matt!
I liked the animation too. you should tell your viewers that since you don't ride the bike at idle that screw doesn't do shit.
+Burt Reynolds thank you burt, yes u don’t ride at idle but the the small Jet provides fuel to the system at least until half way to full throttle. So it is pretty important for responsiveness and pick up, also for spark plugs health.
yes I wanna know what program is used. I'd love to start doing these type animations for my little vids I do
Excellent presentation!
This was the only video I could find on adjusting the mixture screw. GREAT JOB, THANK YOU !!
+Jim McMath you are very welcome Jim :)
Great animation of how the carb works and how the air fuel works
One of the best videos I've ever seen. Can't believe I found a professional who admits he made a mistake! That's how we learn. Been a car tech since the 70s and smart enf to know I have a ton to learn. Hoping this helps me fix my Son's bike.
Thank you very much!
Thank you Joe!!! I’ve discovered the coolest stuff by making mistakes so i see the as a “badge of honor “ 😊
Excellent video explanation. The animation is perfect. Clear and concise. Subscribed!
An AMAZING, INFORMATIVE, and highly ENTERTAINING video. The graphic on the inner workings of the CV carburetor are really top-notch. Grazie Mille.
Joe Kacmarynski thank you Joe :D
Great animation on how the fuel / air delivery works. Congratulations - 1st class video.
Thenk you very much Steve!!!
Very detailed one! Loved the way the working of CV carbs explained with the animation!
Thank you man!!!
Very thorough, very detail oriented, I love that. Extremely effective use of graphics as well, i'm certainly going to have a much easier time rebuilding my 1982 Yamaha Virago XV920 carbs now. Like, this was actually super informative I'm blown away.
Thank you very much man!!! Good luck with your carb rebuild :)
This video really helped me to adjust my CVK30 carburetors on Kawasaki ZRX 400.Now throttle response is amazing,thanks mate!👍
the overlay diagram is super nice. 10x
+chavdar levkov thank you man!
Thankyou
that EPIC overlay diagram was what made HIS VIDEO STAND OUT from the other useless explanations i've wasted my time watching !!! keep up the good work.
Probably what he's actually good at! 😂
The best thing for everyone would be for people to stop trying to teach things that they don't know how to do themselves. That would clear everything up!
The way you represented the carb in diagram was amazing... rest of the content was awesome as usual.
Thank you very much PP 😊
I have a Honda CT70, which is obviously a VERY different motorcycle and carb. But, this video has helped me understand my bike so much better. Thanks!!!
awesome animation explaining the workings of a CV carb
Thank you Dave :)
Great video thanks for the full in-depth explanation on CV carburetors
Thank you Pete
There r lots of videos on CZcams but your video is very helpful for me ... Thanks buddy
Thank you much for this video! It cleared up some questions I had as I have been working on my carb. Two thumbs up! Way up!
Good visualisation of the carb! Interesting.
Great video. Carbs have long been mysterious to me but you made it easy to understand. Thank you!
thank you man! so happy that it was useful to you :)
honestly it is the best video about bikes customizing i've ever seen! it was so useful for me! i am rebuilding my first bike and this is just EXACTLY what i needed because i don't have any experience yet! it would be great if you'd make more videos like this, about transmission, engine, electronics, breaks etc.!
anyways, i appreciate what you do, it's very helpful! thumbs UP!
Thank you Sergiy, I'm planning on doing a few episodes on those subjects starting with the exhaust, so make sure you click on the little bell next to the subscribe button to get notifications of the new videos ;)
Custom Cez sounds great! I'd also like to know if there's any way to contact you if I have any questions during my project. some kind of public chat or an e-mail where people ask you for advices. thank you :)
yes, you can join the discussion on my facebook page facebook.com/romacustombikeeng
Custom Cez thanks!
hey that's awesome man. as my dad would say "get back to work boy" lol
Good Job. Makes the CV action clear!
Great job explaining how the CV carb works!
Thank you John :D
Man this is so helpful! Keep the channel alive
Animation top-notch!! Very usefull to understand how a carb works. Thanks.
Thank you Diego :)
fantastic. best animation I have seen. so helpful! best part is the guy smoking a cigar next to a motorcycle engine.
Hey. I come from an automotive background and the CV carbs were black magic to me. I appreciate showing me how it works!
Thank you Boyd :)
Early Honda Cars used 2 of these. My buddy's 1984 Prelude had the that setup.
Very well put together. Great host. Great content. Thank you for your hard work.
Thank you for the very clear animation!
I have a problem with my Yamaha YZF 600r which starts without any choke after cleaning the carburators and replacing the pilot screws.
Now thanks to your video I can see that i probably turned the pilot screws out too much and was running rich.
Finally some one who understands us lol awesome very great information much needed bro
Great info. Loved the down to earth explanation of the material! Super great job.
Thank you 🙏
The role of the spring is also worth to talk about. Its strength determines the air/fuel ratio. If the spring is old and weak, the same vacuum will suck the diaphragm and pin higher, so the fuel consumption will increase.
Simply awsome man.... tune the carb with all accessories attached to it....adding filter after tuning will result in loss of duel....
Ciao ragazzo :)
Hello from Slovenia - Maribor.
Amazing video. Same thing goes for PWK carburetors to.
People tell how to adjust it, but your animation does it the best cos it shows the main thing.
Keep up the good work.
+1 like ;)
Ciao Alexis,
thank you very much!!! I'm very proud of this video and I really appreciate the feedback :)
The best video i have seen on tuning carbs! Nice work!
Thank you very much 😊
tHIS WAS MORE THAN HELPFUL !! tHANK YOU FOR THE POST!
thank you Terrin :)
Hi there Roma Ces,that was a great run through on how to adjust the screw on the carburetor,thank you so much ,for all them great tips,thank you friend 😊😊😊
great animation, really makes it easy to understand
Thanks for the help,finally set my carb to its optimum setting
so glad it was useful to you :)
Thank you for the animation helped me out alot.
Thanks a lot ! What huge animation job you did ! It is the most didactic carburator explanation I have seen.
Thanks for your effort and I assure you it helps me a lot!
very glad it was helpful :) thx for the compiments!
Excellent video.Thankyou so much.
Great job. Clear presentation. cheers.
this is by far the best explanation i have ever seen
+KingBennon thank you so much!!!! I'm really glad this is working out for so many people!!!
Great animation. Best explanation yet
The cgi operations line diagram is great! The rest of the video I found clear and helpful as well.
I don't usually comment on videos but this is really helpful. THANK YOU. Now I at least have a decent idea on how to go about adjusting my carb. Keep up the good work man!
Thank you so much Pontus :D Glad it was helpful to you!
Very good video ,very informative on the 2 different types cv carbs 👍
Muito bom, parabéns!!
you did a great job, best cv carb video out there.
excellent video , it took a cartoon to help me understand a CV carb , thanks
hey man, what ever it took, the end justifies the mean right? :) glad you liked it!
Great video!!! Hugely helpful
fantastic info, and greatly needed too, thanks
I appreciate you pointing out the cap covering the adjustment screw. I have a Yamaha XS 1100 and had to replace one of the four carbs. I ordered a carb body off eBay but noticed there was a brass plug covering the adjustment screw. Good to know it can be removed if needed. Thanks.
Awesome video man, great visual aids!!!