Re: Stalling after cold starting?

["Solomon Ngan" <sngan@netaccess.on.ca>]

> From:          Wesley Leung <wleung@interbase.borland.com>
> Subject:       Stalling after cold starting?
> To:            quattro@coimbra.ans.net
> Date:          Wed, 19 Jul 95 14:36:40 PDT

> Hi gang,
> 
> Any idea on this one.  My 92 100S Audi seems to be fuel starved (or
> something of that sort) when starting the car after sitting for a couple
> hours.  It starts fine, but the second I give it some gas the engine acts
> like it not getting fuel and the rpm's drop below 700rpm.  If I keep my
> foot on the gas it sometimes chugs along before going up to 2500 rpm.  If I
> stomp on the petal, the engine reacts and the rpm shoot up be it not very
> smoothly.  The car didn't act this way when I bought it a month ago, now it
> of course acting up more than a week ago.  I've used Shell, 76 and now
> Chevron super and fuel injector cleaner but no cigar.  I have a feeling
> it's has something to do with cold start mechanism shutting off when I
> touch the gas petal.  Anyone else have ideas or should I bring it in to the
> shop?
> 
> Thanks!
> Wes
> 

Check the fuel check-valve, at the discharge side of your fuel pump.
That was the problem with my VW GTI.   In my case, there was a slow 
leak in the check valve.  The bottom line is that the pressure gauge 
may show that pressure is being held by the check valve - at first.  
But after 20 minutes or so, the pressure start to drop.   Therefore, 
after an hour or so, my GTI had problem.    Problem fixed after check 
valve was replaced.  But the mechanic at first insisted that he 
already checked the check valve because it did hold pressure for a 
minute or so.

_________________________________

Solomon Ngan <sngan@netaccess.on.ca>
  '93 100s
  '90 90q20v
  '84 5ks