HELP!! DCOE 40s on 1.8 gti engine jetting and setup
Hi all, I have put a PB 1.8 gti engine in my golf and it is running like a dog!! It had a set of Weber DCOE 40s fitted to it before I bought it and a stainless exhaust came with it.
I have had the carbs apart, stripped and ultrasonic cleaned them and it made it run a little better but still coughs and splutters like a b****.
How would you suggest to set up the carbs and which jets, venturis and needle valve should I use?
Any help would be great as I need it running pronto
Kind regards
Will Butler
I have had the carbs apart, stripped and ultrasonic cleaned them and it made it run a little better but still coughs and splutters like a b****.
How would you suggest to set up the carbs and which jets, venturis and needle valve should I use?
Any help would be great as I need it running pronto
Kind regards
Will Butler
1 - 3 of 3 Posts
Hi, I am running dual 40DCOEs in my 98 Jetta. Heres what I can tell you about setting the carbs up.
#1 There are 4 or 5 books about weber carbs. Buy them all and study them. These carbs are are very subtle and you need to understand how they work before you start working on them.
#2 Buy and install a wideband air fuel mixture gauge. Tho 14.7 is said to be the desired A/F mixture, You will find 12.5 to 13.5 is what works best.
#3 Buy a good selection of jets from what you learned from the books.
#4 Go, if youre like me, in 3 or 4 months you will have them tuned.
The Chinese jets work fine.
#1 There are 4 or 5 books about weber carbs. Buy them all and study them. These carbs are are very subtle and you need to understand how they work before you start working on them.
#2 Buy and install a wideband air fuel mixture gauge. Tho 14.7 is said to be the desired A/F mixture, You will find 12.5 to 13.5 is what works best.
#3 Buy a good selection of jets from what you learned from the books.
#4 Go, if youre like me, in 3 or 4 months you will have them tuned.
The Chinese jets work fine.
1 - 3 of 3 Posts
- This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
VW Vortex - Volkswagen Forum
A forum community dedicated to all Volkswagen owners and enthusiasts. Come join the discussion about performance, builds, modifications, classifieds, troubleshooting, maintenance, new releases, and more!
Full Forum Listing
Explore Our Forums
Recommended Communities
