[s-cars] Fuel Pump Woes!!!! HELP...

[Abhijit Kondajji]

Levent, 

I am, as yet, still learning but being that the pumps are intank, a
full tank of fuel should have no problem being picked up even if the
feed was slightly above the bottom. I don't understand how your mech
is saying it won't work in these conditions. I need to buy a Bentley
or something to learn the diagrams!

Also, have you thought of the problem being the fuel pressure
regulator diaphragm? I know when it springs a leak, you are bound to
have hard starts due to fuel seepage.

Regards,
Abhijit

p.s: Maybe you could swap FPRs and test one of these days?


> 
> Message: 10
> Date: Mon, 21 Feb 2005 21:37:12 -0500
> From: Levent Cur <leventcur at charter.net>
> Subject: [s-cars] Fuel Pump Woes!!!! HELP...
> To: Audi S-list <s-car-list at audifans.com>
> Message-ID: <421A9AD8.9030709 at charter.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Ok so i bought a fuel pump for my 95 S6 from good old Shokan. They sell
> a Pierberg pump for my cars application. It is about 3/4" taller than
> the stock VDO pump that came out. My mechanic put the new pump back in,
> and he said he clipped the top down. So now the pump he believes is
> sitting too low with about 1mm of space between the feed at the bottom
> and the bottom of the tank. Now comes the fun part... We went for a test
> drive, and the car stumbles real bad when any gas is given to it. Keep
> in mind it drove perfect when i brought it in; i was just having
> starting problems, and we had determined through earlier posts it was
> fuel related. Now the problem is Shokan and my mechanic both say since
> the (new 3/4" taller) pump is clipped into the stock location that its
> sitting to low in the tank and thats whats causing the stumbling when on
> the throttle hard. This is kinda funny cause the car ran perfect, 22 lbs
> of boost and no stumbling before the fuel pump install today? With the
> pump prolly barely at all off the floor of the tank cause it to starve
> for fuel when the car is pushed harder? I'M SO LOST! The new pump is not
> bad by the way.
> 
> -=Levent=-
> 
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