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Re: Fuel pump roulette
Many thanks for your prompt reply. I'm totally agreed w/ you. Also, I
can see...why the Audi thinks this FP screen is a redundant (since
there is a fuel filter next in line), and send the TSB to tell us to
take it out.
But...humm...if the FP screen--the one you took it out, was clocked up
w/ those brown silts. (Gotta check mine this weekend.) Anyway, do you
think we might end-up w/ replacing the FF more frequently than it
should be? (Well..that's another way to get some of us--who do not
want to get their hands dirty, to go back to the dealer, of course, for
the FF replacement more often.)
'89-90 non-q (70+K miles & humming FP)
______________________________ Reply Separator _________________________________
Subject: Re: Fuel pump roulette
Author: QSHIPQ@aol.com at INTERNET
Date: 10/20/97 11:52 PM
I'll risk the caps. THE FP SCREEN IS REDUNDANT.
Here's the deal. There is a screen that sits in the plastic tank baffle.
The FP sits in a plastic seal that sits down into the baffle with the
screen. Audi, with the TSB is eliminating 1 of 3 safeguards to EXTERNAL
schrapnel. 1 is the baffle screen, 2 is the FP screen, 3 is the FF. 2
safeguards is plenty for EXTERNAL. For the INTERNAL FP derived schrapnel,
think of it this way:
Assume the FP is loud cuz it's screen is clogged. Since the FP schrapnel
(INTERNAL SCHRAPNEL - defined) will start upstream of BOTH the FP screen AND
the tank baffle screen, the only thing that is saving the FD is the FF. So
eliminating the FP screen is hardly a risky proposition in this case.
FYI, I saved the FP screen (per TSB cause: brown silt from tank liner
material clogging FP screen = loud FP symptom). Holding it up to light shows
that about 10% of the area of the screen is free. Not good.