Long crank time....
04-26-2007, 07:55 AM
#11
IME, that is the only sign you are going to get that your fuel pump is about to die. Ignore at your
peril.
The OE pump number is 8A0 906 091G. OE brands include VDO/Siemens and Bosch. Aftermarket includes Pierburg.
See replacement procedure link below.<ul><li><a href="https://forums.audiworld.com/s4s6/msgs/149784.phtml">FAQ Fuel Pump Replacement Link</a></li></ul>
The OE pump number is 8A0 906 091G. OE brands include VDO/Siemens and Bosch. Aftermarket includes Pierburg.
See replacement procedure link below.<ul><li><a href="https://forums.audiworld.com/s4s6/msgs/149784.phtml">FAQ Fuel Pump Replacement Link</a></li></ul>
04-26-2007, 08:27 AM
#13
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Like Jonny K says, it's likely your fuel pump check valve.
Another culprit is leaky injectors. Run some injector cleaner through your next tank of gas and see if that helps. I had a similar problem and had my injectors ultrasonically cleaned and haven't had the problem since.
04-26-2007, 09:14 AM
#14
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Is the check valve in the pump, or on the fuel rail??
I think I'm gonna try the battery first as I know it's old and may be on its way out anyways. If that doesn't fix it, I'll look towards the fuel pump or check valve.
I've got 150k on the clock now, and I can't find any evidence that the fuel pump has ever been replaced.
I assume this is a DIY job.
I've got 150k on the clock now, and I can't find any evidence that the fuel pump has ever been replaced.
I assume this is a DIY job.
