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11-09-21, 04:55 PM | #1 | |
Senior Member
Classic Audi Club Member
Join Date: Feb 2019
Location: Near an MB ur Quattro
Posts: 1,171
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Ur warm up regulator fuel pipes
Mine are both a bit rusty at the fuel distributor end.
Probably fine for another few years but I would not like them to split while driving! Anybody got two spare and would like to sell both please? Or can they be re-crimped? Sent from my iPhone using Tapatalk
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2006 A3 (daily drive) 1987 MB ur Last edited by BackintheFold; 11-09-21 at 10:11 PM. |
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11-09-21, 11:24 PM | #2 |
4 ring whore!
Classic Audi Club Member
Join Date: Nov 2007
Location: Polmont
Posts: 2,617
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You may be in luck. I'll have a search
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1991 90 quattro 20v sport 1991 90 quattro |
12-09-21, 07:47 AM | #3 |
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Join Date: Feb 2019
Location: Near an MB ur Quattro
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Thanks Mike. You’re a star!
I also wonder if the warm up regulator is the reason my car starts like an absolute pig, but settles down to an excellent idle and runs fine after 10-15 seconds or so (I’ll time it properly today). I’ve disconnected the cold start valve but the smell on start up is very rich. On a long run I’m getting 33mpg, and the plugs do look lean. I don’t have a pressure tester to check WUR operation-would you say that’s next step? I have to be careful removing the fuel pipes as they are not brilliant. Thanks again!
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2006 A3 (daily drive) 1987 MB ur |
13-09-21, 07:12 PM | #4 |
4 ring whore!
Classic Audi Club Member
Join Date: Nov 2007
Location: Polmont
Posts: 2,617
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Found them - feed and return. PM me
For fuel pressure, it should start low around 1.2-1.5 bar and increase when warm to 3.3-3.8 bar. I'm not 100% sure on the numbers for your engine. Make sure everything else is in good order. Fuel delivery, injectors not leaking, check valve working correctly, accumulator diaphragm good. I got my tester from a German seller and it was easy to setup and confirmed a warm up regulator fault straight away.
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1991 90 quattro 20v sport 1991 90 quattro |
13-09-21, 09:29 PM | #5 |
Senior Member
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Join Date: Feb 2019
Location: Near an MB ur Quattro
Posts: 1,171
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Will send pm...
I am scheduled to check the injectors tomorrow. I have 5 glass pots for the ends to sit in for 24 hours! I will look for fuel gauge later too. Thanks again! Sent from my iPhone using Tapatalk
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2006 A3 (daily drive) 1987 MB ur |
03-10-22, 08:39 AM | #6 | |
Grown up member
Classic Audi Club Member
Join Date: Jun 2013
Location: Northern Ireland
Posts: 209
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Quote:
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03-10-22, 08:54 AM | #7 |
Grown up member
Join Date: Nov 2020
Posts: 309
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Sorry to have to tell you, Mike sadly passed away earlier this year.
If you're having fuel system issues, I'm happy to try and help, I've been through it with my Coupe GT including rebuilding the fuel distributor and warm up regulator. |
03-10-22, 09:00 AM | #8 |
Senior Member
Classic Audi Club Member
Join Date: Feb 2019
Location: Near an MB ur Quattro
Posts: 1,171
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My problem was leaking fuel injectors. Fixed by replacing them!
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2006 A3 (daily drive) 1987 MB ur |
03-10-22, 09:25 AM | #9 |
Grown up member
Classic Audi Club Member
Join Date: Jun 2013
Location: Northern Ireland
Posts: 209
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Gosh I’m really sorry to hear that about Mike. I hope I haven’t upset anyone on the forum by asking my question.
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03-10-22, 11:08 AM | #10 |
Grown up member
Join Date: Nov 2020
Posts: 309
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I didn't know him personally but some others on the forum did. I know he'd be disappointed if we stopped talking about old Audi's though, so do post up what the issues are and I'm sure someone will be able to help.
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