Part 1, understanding the weber carburettor DCOE
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- Опубликовано: 12 апр 2020
- This is the first video on how to rebuild , tune and understand the weber DCOE carburettor. I am explaining the operation and main principles of the DCOE
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You're a fantastic teacher, discussing the basics and then showing it in practice makes this very easy to understand. I'm about to swap a very tired set of twin SU's on my 260Z for a triple weber setup, this and your next two videos are going to be invaluable. Bravo!
Your videos on Webers are the best. Slow and concise. Just what we need. I'm installing 4 DOCE's on my Chevy big block and no one to help explain anything. I'm sure I will be coming back for more views....Thank You.
Great to hear! Thanks for the comments.
I love your measured delivery and clear descriptions. An excellent teacher and thanks for demystifying engines and giving me insight to see what I can do myself and what I'd best leave to others. Thank you
Very welcome!
Truly a FANTASTIC series of tutorials!
My sincere compliments.It is rather rare to find someone who can explain something rather complex with such clarity.I truly appreciated the verbal clarity,the super well laid out schemes,the helpful video parts.All perfectly presented.
Thank you so much,my 2002 with 45 DCOEs is grateful and smiling...Andreas,Turin.
Wow, thanks! and Thanks for the comments
I tuned weber carbs for years in competition, this is a wonderful tutorial Steve well done.
Thanks Gerald, and maybe you could share some good pro advice ?
@@D3Sshooter I have a pair of Weber 40 DCOE carbs on a 1960 Mercedes-Benz 190SL. The car is reluctant to start from a cold start after sitting even for a day or two. Priming it with fuel through the air intake allows it to start immediately and it runs just fine after that. I don't want to burn out my starter trying to crank from a cold start. Any suggestions on what adjustments may be needed? The fuel pump is fine and the hand primer lever gets fuel to the carbs.
@@troyroberts8568 , What I read seems not to be a cold start issue, but more a time/fuel issue. It almost sounds like your fuel chamber runs empty or low when the car sits for a while. There are several possible reason for that, first a fuel chamber leak and fuel escapes , but I guess you have no fuel leaks spotted, second the fuel evaporated due to heat build up and or flooding when the engine stopped. Have a look and test the car with a warm motor, stop and wait a few minutes ( 5) then start... if its hard to start you might have flooding issue... check your float level first. Third, your cold start circuit might be clogged as it starts with priming fuel through the airfilter. Does it run good after it started on idle ? In each case start with the float level check, then check the fuel pump pressure and volume..... Might be difficult with a mechanical pump as it is needed to run the engine so you need a T piece for you meter. Here is what I would do: disconnect the fuel line on the carb. connect a fuel bottle or canister to the carb and hang it up high ( higher then the carb) and let gravity do its thing by filling up the carb. Let the car sit a few days, then start it in that configuration. If its starts and the fuel level in the bottle did not change over the days then its not a carb issue but a fuel supply issue. Best then to replace the fuel pump with an electrical version. If the fuel level went down before you started , then you have an issue with the carb itself , maybe the needle valve, the float etc... and that should be checked. If it does not start, check your idle circuit . Another check is to pump the gas pedal a few times rapid before starting and while doing so have someone look inside the carb and check that fuel is squirted in.... Then start ( that should work) ... If you did not see the fuel been been squirted in then you have a fuel level issue or acceleration pump membrane issue... Does the car accelerate fine when driven ?
@@D3Sshooter In full disclosure, I'm not the one working on the carbs. The mechanic that restored the car had cleaned the jets and done everything except put them in a parts cleaner. He said the car runs great and idles fine after starting it with some starting fluid or fuel manually put in the intake. The car will hot start after a short time, but if it sits for hours or more, it will not start at all. There are no noticeable leaks and no fuel on the garage floor indicating a leak.I'm not sure he has driven the car after starting it or is just trying to make sure it starts in all cases. When I gave the car to him, I did notice a small metal ball about the size of a BB that was very similar to the ball in your video used with the weights next to the accelerator pump. This ball was outside of the carb and sitting on top near the wing nut that holds the top cover on. I assume this ball and weight act like a check valve. If the ball was missing, would this allow fuel to backflow and empty the chamber causing it to be hard to start?
Is it difficult to tune dual 45s on a 81 corolla 1.8 w cam header mild performance parts
This dude is legit... I'm basically a kindergartner when it comes to carburetor function and this guy made a semi-complex carburetor seem simple - and it all made practical sense!!! Most car techs won't give you a drop of knowledge. This guy knocks it out of the park. Wonderful... wonderful.
Thanks for the comments Brandon, I try to help my fellow piston heads lol
Outstanding presentation. Total neophyte here. Very helpful.
Thank you so much for explaining Weber DCOE carburetors. I have a ‘73 Triumph TR6, having reliable power problems which I suspect are due to my 50 year old Stromberg carburetors. I’m considering changing them out to Weber downdraft carburetors, +/- $1300 U.S. before labor, or Weber DCOE sidedraft carburetors, +/- $3,000 U.S., before labor. I’m in the U.S., where carburetors were fitted rather than fuel (petrol) injected for emissions reasons. No need to worry about emissions now as the car is so old the government doesn’t check for emissions anymore. I’ll tinker with the Strombergs some more before probably considering the downdraft Webers for budget reasons.
Steve, like everyone else I think you do an excellent job explaining the Weber DCOE carbs. I just purchased a Caterham 7 wiith a Ford Cosworth 1600 BDA engine. It needs carburettor tuning and I have been worried about doing it. After watching your videos I feel a lot more confident going into this project. You are doing great videos, keep up the good work.
Thanks and good luck with the rebuild
The most amazing video! Your descriptions and close-up detail shots make this carburetor-for-dummies! If only every car repair video was this well made.
Thank you
Morning steve. So glad your finding videos too post. I'm not a mechanic but love watching about fixing or restoring things. If you was a teacher Steve I'd come to school everyday as you explain things so well 😃 Keep safe so looking forward to seeing your next post. Thanks Stevie 😎🇬🇧
Cool, thanks!Thanks for the comments
A perfect introduction. I have a pair of 45s on my 1973 BMW 2002. It’s been an education. 😅
Thanks so much! I am old, but new to Webers. I need to rebuild a couple. Have looked at several videos and this is "head and shoulders" above them all. I will have this video standing by.
Sir, thank you for this video! 🙏 I now understand my DCOEs more. They still feel like black magic, but I understand considerably more how to get my old car running again. A thousand thank yous again!
Thank you for the comments.
Thank you Steve... Just like that, I realise my two Webers don't actually have a little box of magic hiding inside! - Perfectly to the point, and incredibly helpful video! Looking forward to your next installment! Thanks Again!
Glad to help!
Thank you sir, unique video tutorial, greetings from Belarus😀
You are welcome!
Simply the best. De-mystifies Webers better than anything in print. Just excellent. Ready to play with the 45 on my new-to-me vintage racing MGB. Thanks very much Steve.
I like to think I know all the basic principles of the workings of a carberator. However you have given a remarkable explanation, Steve. I'm looking forward to this series! ...Newk from Kentucky USS
Thank you very much!
Suddenly you have my full attention - Webers- I knew there was a reason why I watched you doing floor tiles.
Thanks and more is to come
@@D3Sshooter i subscribed for old rusty, rust repairs.. but have enjoyed all your videos and now a lot more confident if i end up with twin dcoe on My engine (isuzu G200Z in Holden Gemini, of Australia)
I learned on a set of triple Mikuni carbs, the learning curve is steep but rewarding, setting the the linkage was the wild card for me.
Just watched your whole Weber Carb rebuild series, and just wanted to say thank you so very much. I can and will rebuild, and jet mine confidently thanks to your series. Thank you again. I am now subscribed to your channel :)
Great to hear! Thanks for the comments
I am just starting to get into carbs and it has been hard to find any good videos on how they work and tune them. Thank you so much!
You are so welcome!
What a lesson!!! I have a Morris Minor 1969 TwinCam Fiat Engine 2.0L that have Weber also and your video is giving me huge knowledge... Thanks for your effort as well your devotion... Explanation is on top of roof...
Best Regards
Pablo De Oliveira
Former England Futsal Player
Glad it helped! Thanks for the comments
That was an excellent and simplified explanation about carburetor basics. Thank you for posting this very informative lesson.
You are welcome!
What a great teacher you make ! In those times of lockdown, i'm watching all your videos in hope of buying my car and be able to fix everything myself. Thanks for helping my dream come true :)
My pleasure, stay safe
The most useful video regarding webers. I have learned more in this one video than I have anywhere else, thank you.
thanks for share with us your big knoledge.. greetings from italy
Thanks for your comments. and this great Italian carburettor manufacturing
@@D3Sshooter thanks..
Btw, Not bad italian pronunciation!
Thank you Steve, very informative video, looking forward for the next one.
Glad you enjoyed it
Good overall to acquaint us with Webers without overwhelming with complexity. Thanks!
Thank you. I have learned so much from your vids. And my Mrs likes your accent.
Wow, most excellent! You've done a fabulous job linking the theory of operation to visual examples. It's been over 3 decades since I last installed and tuned a Weber DGV 32/36 on my old MGB, so your video acts as a refresher (the internet and RUclips didn't exist back then). I'm looking at installing a 34ICH on my Ford V4 in my vintage snowcat. Now I need to watch hours of your other videos!
I have been using for 30 years and I learned a lot!!! Thanks
Great to hear!
I can't imagine a better lesson to understand the internal workings of my dcoe's. Thank you for this amazing video!
You're welcome!
I'm impressed with Your knowledge!
I appreciate that!
Great great great video!!! Thanks you Keeping the knowledge alive for my younger generation!!
Thanks for watching!
Excellent and informative video, thanks for posting this !
Glad it was helpful!
Wonderful explanation! Thanks for sharing
Glad it was helpful!
You have done a well researched vedio. congrats.
Thank you
I always learn so much when you do these videos
Thank you for the time you put into sharing your knowledge
Glad to hear it
Great video Can't wait for part 2. Best explanation I have ever seen. Been screwing around with my Webers this helps so much. No manual I ever read does such a good job
Thanks for the comments , that is out since a while Part 2... check my channel
Thanks I enjoyed your video and was interested in your description, really useful...
My pleasure
Very clear and informative videos. Keep up the excellent work mate!
Much appreciated! Thanks for the comments,
Explained very well. Easy to follow. Nice job.
Glad you liked it
Thats a wonderful lesson of old school techique. Thank you for sharing your knowledge with such a accessible way
This was a great video on description and operation. Cheers
Glad you enjoyed it
Great video! Very well explained and detailed! Alex, from Barcelona (Spain).
Glad you liked it!
Many, many years ago I was looking for info on carbs. Many,many years later I have tuned a lot of them. All I can say is that I wish I had a video like this back then!! Congratulations very well done
Thanks for the comments
Thank you for this video. I learned so much. So glad I was suggested your channel!
Glad it was helpful!
I have been using Weber DCOE carbs for 40 years. And DGV’s before that. I have been rebuilding them for a long time as well. But I could never get the knack of tuning them. I have a friend who has the “magic” ear for tuning Webers. Your video has been the 1st I have seen the explains them as well as you do. Thank you.
Thanks for the comments, and tuning is on its way
Thank you! You are a great teacher. I wish I had teachers like you in school 😅
Thank you! 😃 I guess its because I am old school....
Thank you!!! Great explanation and visuals...
This is a superb explanation. I have used part 2 already to dismantle my DCOE with the computer on the bench and have not watched part 1 3 or 4 times to remember all the systems. Thanks so much!
Glad it helped
Fantastic videos, very informative and very well presented. Thanks very much. Keep up the good work.
Thank you very much!
You sir are very thorough , that's why i watch your videos and learn a lot Thanks !
I appreciate that!
I bought a Datsun that has a dual Webber 38 on it. Thanks for helping me understand it. Need to do a headgasket
Such a really good informational video Steve..great bit of filming and editing btw. Really enjoyed that and completely demystified Weber carbs. Looking forward to the next video.
Much appreciated!
Very Nice tutorial....I'm into old Honda Motorbikes and I always love seeing a set of webbers on a Honda 750.
Glad you enjoyed it!
I had one of these on a triumph t140 motor back in the day, worked really well.
Indeed , that is where they were also fitted
I've just bought a 1959 Giulietta Sprint with dual Weber 40 DCOEs, and this has been the first time I've understood what's going on in them. Really clear. Over the next few months I'll try to fix an issue with a lag in acceleration from idle. After I watch all these videos a number of times I may try to inspect to see if the jets are all correct for the car, and if the acceleration pumps are working well. Thanks!
Really great video, very clearly explained. Just like taking a class, you are a great teacher.
Wow, thank you!
you are very good and explaining everything
Thanks for the comments
Great video. I just purchased a Formula Mazda and it comes with a Weber side draft and I don't know a thing about these. Your video is very helpful.
Love this this tutorial! Just bought a pair of fajs 45s and this was really educational. Keep the goodwork up!
Awesome! Thank you!
This was VERY informative! Thank you!!
Thanks a lot for this masterclass!!!
Glad you like it!
Fantastic video, well explained.
I'm fitting a 45DCOE to my Mini and this explains how it works brilliantly.
Thank you
TXS for the comments, that is one hell of a carb for a mini... did you had to change the bulkhead ?
@@D3Sshooter
Yes, cut the front bulkhead and fitted a Weber box.
So well described!!! Thank you!!
Thank you for the comments.
great video, best explanation ever!! can't wait to see part 2 and 3
Awesome, thank you!
Excellent video, thank you.
Awesome explanation. Thanks!!
Thanks for the comments,
Thank you! Excellent work!
Glad you liked it!
I just bought a 1972 240Z with 3 DCOE 40 carbs. I'm leaning everything I can about tuning them since I've never had them before. Thank you for your video, I enjoyed it and learned many things.
Good luck and Thanks for the comments
Thank you for a good tutorial. I did not know much about Weber type carburettors, mainly because back in the day before we could become familiar with any carburettor in general, the auto industry switched to fuel injection.
Thanks for the comments
Nicely explained 👍
Glad you liked it
Thank you! Perfect pronunciation of the Italian word!
Grazie per le belle parole
@@D3Sshooter but you missed the double P and Z, in fact it's DOPPIO CORPO ORIZZONTALE, be careful with double letters in italian as many times they change meaning.
For example:
1.CAPELLO means HAIR - CAPPELLO is the HAT
2. ROSA is the flower ROSE and the colour - ROSSA means the colour RED (adjective feminine, masculine is ROSSO)
3. LOTTO can be the LOT, a SITE, the STATE LOTTERY - LOTO is the flower LOTUS
and so on...
From now on I call you "the demistyfier", because of your skills to explain loud and clear techniques that looks as a mistery to so many! This is a huge thumb up!!!
By listening to your explanation on the Weber40, it was also a nostalgic moment for me as with friends in our younger years, we raced an Alfa GTA 2 litres, equipped with those carburators. (VAS or Vlaamse Auto Sportfederatie)
I also would appreciate an episode on your point of view on the actual Covid-19 crisis. I listened very well to your explanation on the difference between religion and the institute behind it! It impressed me.
I like to learn what is your analysis on what is happening know. Thanks in advance.
Thank you
Very detailed tutoring video. I learn the knowledge from this video a lot. Thank you so much. D3Sshooter
My pleasure!
Clever man... very well explained
This is a fantastic explanation of the circuits in a carburettor, so good that it made me wish I could show it to my much younger self rebuilding carburettors on my poorly running cars. I got them working but really didn't understand fully how they worked and believe that I could have done a much better job.
Glad you enjoyed it!
this is fantastic. I cannot wait for part 2.
Thanks for the comments, its done an out , soon part 2B
Thanks for taking the time to make and post this info and video will help me loads
Glad it helped
Excellent video!
Thank you very much!
I like your videos because your explanation for everything very detail so I am as a learning very happy to watch your videos. Thanks
Glad you like them!
Very grateful for the fact that you are taking the time to share these tutorials with us, they are both very instructional and interesting. Earlier today a learned about the functioning of the clutch, and now I'm starting to learn about the carburettor. What more can I ask for?
My pleasure, enjoy
Excellent tutorial. I’ve just recently purchased an MG with a 45DCOE fitted, so needed a lesson in how these work. I’ve looked at the Haynes manual for Weber’s, but have found your video much easier to digest. Thank you!
Glad it helped
Steve, in your experience, does a Weber side draft need a fuel pressure regulator?
compliments for your perfect italian pronounce and carb. knowledge
Wow, thanks!
@@D3Sshooter you're welcome, can't wait to se a video of you tuning and trim a pair of 40 Solex, Weber or my fav. Dell'orto, on engine. possibly on an Alfa Romeo )))))
Excellent video. Weber 101.
Thanks for the comments
Great videos. I was stumped on my weber with the choke area. Thanks for explaining this.
87 samurai sat for a few months and now it wont start.
Im atempting to perform a tune up on it.
Brilliant / Concise / Useful - Thank you
Top video, thanks for taking the time to make it, it's a great help to me.
Glad it helped
A great video thank you!
Thank you for the thorough approach to this topic. Although carburetors vary, the basic principles and functions can be identified in most, so this tutorial also served as a basic introduction to the mechanical fuel delivery system in it's own right. Webers were originally on my mind for their current supply of spares, gaskets and customizable parts, unlike my current Mikuni carburetor which hardly has any spare parts available for it in my region. I use my carbureted Honda engine daily, so user-friendliness, availability of spare parts and familiarity is essential for keeping the engine sharp. I'll go through and troubleshoot my carburetor now that I've been inspired by your video and see what I will end up using on the car on a regular basis.
Edit: Also, did I by chance hear a Swiss accent? My apologies for not containing my curiosity.
Thanks for the comments, interesting write-up. Swiss, not really more Flemish
VERY WELL PUT TOGETHER SIR THIS VIDOE IVE ALWAYS LOVED WEBBER CARBS BRILLANT CARBS HAD EM ON MY 351 V8S X2 AWSOME
Glad you enjoyed it
@@D3Sshooter Absolutely sure did an you can keep on bringing more carbie videos love em 👍
Very nice job
Thank you
Very interesting. Thanks
Very welcome
Nice it will help me alot more on my twin side set up on my ke70..
Thanks for the comments
great knowledge
Thanks for liking
I ran twin DCOE40 Webers on my Suzuki Samurai several years ago. Loved the sound of those thru open K&N filters! Gas mileage wasn’t so hot tho.....
Thanks for sharing!
Thank you very much for this video! Cheers
My pleasure!
Great video.
Glad you enjoyed it