fuel pump talk czech engine light jk

[scott thomas]

I have questioned the thing about it being better to run the car
without a screen vs. with and having it clog, but I've run all of my
cars without screens since '96 with no trouble. Incidentally, the
tanks on all my 5000 turbos were extremely clean inside. My current
200q was filthy with big chunks of rusted, flaked metal and some
rubber bits. The wals of the tank looked fine, however. I cleaned it
out and that's it. The theory, I believe, behind fuel pump failure
due to clogged screens is there's fuel starvation that prematurely
ruins the pump due to wear and heat build up. I think it's mostly the
heat, but I could be wrong; I've been pretty bad to my fool pumps in
the past by not keeping more than a couple of gallons at a time in
there.
In the past, I have questioned the breaking in of a new pump to
maximize life and minimize sound. I didn't get any responses of the
idea of a bench break in with some type of oil or oil/gas mix.
---- Begin Original Message ----

From: Wallace White <wallace at stanfordalumni.org>
Sent: Mon, 23 Sep 2002 09:51:24 -0700
To: "scott thomas"
<scott at dreamtheater.zzn.com>,<wallace at stanfordalumni.org>
CC: <quattro at audifans.com>
Subject: Re: all this fuel pump talk czech screen


That's interesting, Scott. I just spoke with the mechanic next door
about
these pumps. He was familiar with the issue of flaking tank coatings;
his
advice is to clean off the intake screen but not remove it.

He removed that screen once... and the customer's car was towed back
the next
day. Theory being that the roller pump is not able to munch particles
through
it... I'm sure it can get damaged by remnants of the wire screen
getting
ingested!

Many listers have run pumps for years without screens, right? I
understand
Audi instructed this in a TSB, though I wonder why Bosch still ships
them with
the screens...

- Wallace
  '87 5kcstq 190k

"scott thomas" <scott at dreamtheater.zzn.com> wrote:
> I rmoved the czech pump's screen, and I also removed the bottom
> screen from the "basket" that holds the 200's pump in (different
from
> the 5k). Made no difference. I can tell, however that the pump is
> good, but noisy. It has very low miles on it, my best guess is <30k
> miles. My car was not used for one year before I bought it, as well
> as the meticulous maintainance of the previous owner.
>
> Oh yeah, while I was there, I cleaned the bottom of the tank pickup
> area with those non absorbing paper towels you get at the public
> restrooms (they don't soak gas like a sponge). There was lots of
crap
> down there. I'v got on of my oldie, but goodie german fool pumps in
> there.
>
> Oh yeah, I think NAPA/Echlin still makes a good replacement fuel
pump
> for a reasonable price, when compared to the Bosch. I used to work
at
> a Napa years ago and saw this to be the case.
>
> The Official Dream Theater Site - http://www.dreamtheater.net/
> ____________________________________________________________
> Get your own Free Web Email Service with POP access at
http://www.zzn.com



____________________________________________________________________



---- End Original Message ----




The Official Dream Theater Site - http://www.dreamtheater.net/
____________________________________________________________
Get your own Free Web Email Service with POP access at http://www.zzn.com