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24-11-17, 02:27 PM | #21 |
4 ring whore!
Classic Audi Club Member
Join Date: Nov 2007
Location: Polmont
Posts: 2,617
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1991 90 quattro 20v sport 1991 90 quattro |
25-11-17, 02:10 PM | #22 | |
Grown up member
Join Date: Sep 2012
Location: Ripon, North Yorkshire
Posts: 59
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Quote:
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04-12-17, 10:58 AM | #23 |
Grown up member
Join Date: Sep 2012
Location: Ripon, North Yorkshire
Posts: 59
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A little off topic, I changed the main fuel filter at the weekend and noticed that there is no pre pump filter, should there be one? The pump is quite audible from inside the car and I changed the main filter in case it was causing a restriction - no change...
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04-12-17, 11:15 AM | #24 |
Senior Member
Classic Audi Club Member
Join Date: Dec 2013
Location: Back home in Tillicoultry
Posts: 1,308
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No pre filter as I am aware, noisy fuel pump not a good thing, are all the rubber bobbin mounts intact? is the pump sitting against anything metal to transmit the sound? can you hear it at normal road speeds when driving 2000rpm ish? Anyway easy fix, big bore stainless steel exhaust, better stereo and speakers or always take a nervous passenger with you when pushing it to the limit, the shrieks and intake of air through pouted lips normally works to dull the buzzing fuel pump noise
P.S. remember to strengthen up the Jesus Christ overhead handle above passenger seat, all the above worked for me. |
04-12-17, 11:59 AM | #25 |
Grown up member
Join Date: Sep 2012
Location: Ripon, North Yorkshire
Posts: 59
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I'm running a Scorpion stainless system with twin DTM tail pipe from a 5 pot , it's not rattle but a whine, like you usually get when a pump is priming, but constant. Will have a listen on the drive home tonight to see if it's still audible above 2krpm...I find it unusual for there to be no pre pump filter, even in tank ones run them. I might fit the Sytec 255lh one I have lying around in the garage and fit an ally pre pump filter to it that I have.
Last edited by hotsnot; 04-12-17 at 12:07 PM. |
04-12-17, 12:14 PM | #26 |
Senior Member
Classic Audi Club Member
Join Date: Dec 2013
Location: Back home in Tillicoultry
Posts: 1,308
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There is a pre-filter on the Ur quattro but very hard to get a hold of one, if you are already running a stainless steel exhaust I would not expect you to hear the pump when driving.
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04-12-17, 01:31 PM | #27 |
4 ring whore!
Classic Audi Club Member
Join Date: Nov 2007
Location: Polmont
Posts: 2,617
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pre filter got dropped in 1986 on the series 2 cars.
It should sound like a hive of bees from outside the car
__________________
1991 90 quattro 20v sport 1991 90 quattro |
04-12-17, 03:11 PM | #28 |
Grown up member
Join Date: Sep 2012
Location: Ripon, North Yorkshire
Posts: 59
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12-12-17, 05:46 PM | #29 |
Grown up member
Join Date: Sep 2012
Location: Ripon, North Yorkshire
Posts: 59
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So the replacement relay made it worse, now rev limit kicks in at 4k , put the old new one back in. Once I get the Evo back from getting a drive shaft rebuilt it's going into a garage - different one, the guy in there learned his trade on bosch k jetronic in the 80s
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