Fuel Tank Vent-

Ben Swann benswann at verizon.net
Wed Mar 12 20:11:09 PDT 2008


Yes and not necessarily..Try changing the fuel filter(s) first before jumping to
conclusion that the pump is bad.  Excess backpressure from loaded-up main filter or fuel
starvation caused by loaded-up pre-filter can cause noise due to either cavitation
(input) or cavitation (check valve return).  Tank venting may apply as well.

YMMV and other items apply, but don't necessarily jump to conclusion the pump is bad
because there is noise.  Investigate and solve whatever is causing the problem - might
be pump, might be something else, or something else that may cause premature pump
failure.

Also, if you have not relayed the pump, I can't recommend enough to do this and reduce
likelihood of wiring overload through the fuse panel, etc.

A lot of discussion regarding this and related from a few months back on this and UrQ
list.

Ben


[Date: Wed, 12 Mar 2008 20:13:44 -0500
From: "Max Hoepli" <mhoepli at vif.com>
Subject: RE: Fuel Tank Vent-
To: "'omar millmech'" <h636k at yahoo.com>
Cc: quattro at audifans.com
Message-ID: <009b01c884a7$86ea3540$1742efd8 at maxe90ce4b205a>
Content-Type: text/plain;	charset="us-ascii"

AS far as I know, you better have the fuel changed out, or else the car will stop dead.
Have been told by mechanic that a noisy fuel pump is an indication to change out fuel
pump.

Max

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On Behalf Of
omar millmech
Sent: March 12, 2008 12:06
To: Audilist
Subject: Fuel Tank Vent-

Subject is 87 4kcsq; symptoms are loud fuel pump on return trips from a place, no bad
sounds going to a place.  First thought was ~$~, $300+ for a fuel pump for a car that
may be worth $300.  It has been difficult to put gas in the tank lately.  Put the 2
together & wondered if anyone has done a BTDT on fuel tank vents?  Thought the first
thing I would do is make a usual trip with the gas cap loose & listen for the fuel pump.
TIA-]





More information about the quattro mailing list