[s-cars] //Sbitch hard to start when hot

[Jerry Scott]

Vince
This could be the usual fuel pump problem that most Urs cars have after 
100k miles.  The fix is to replace the fuel pump in the tank. There are 
several write-ups on this pump replacement. I was able to fix such a 
problem by running a can of B&G 44K ($23 at NAPA), through the gas tank 
with 15 gal. of gas.  The check valve in the tank becomes gummed and 
allows gas to drain back to the tank each time you shut off the engine.  
You then have to crank a while to fill the line.  I put a fuel pressure 
gauge on the fuel rail so that I could see when the pressure is down.  
The B&G so far has fixed the problem.
Jerry

Vincent Frégeac wrote:

>Hi all,
>
>My "beloved" S6 have developed another reason to keep my week-ends busy.
>When I stop the car for 5 minutes, it takes a loooooong time for the engine
>to start again, like 10 or 15 seconds on the starter (Count them, it's very
>long when your starter is running and you hope the battery will hold). After
>1 minute, it's not so bad, after 30 minutes too and no problem after 1 or 2
>hours. 5 minutes is really the shit spot. I've also noticed that it's a bit
>better when I hold the go pedal to the floor before starting. This made me
>suspect a leaking injector that would flood the cylinder within 5 minutes,
>then the cylinder drains in 30 minutes. But the engine should start, rough
>but start, on the 4 remaining cylinders... except if I have 3 or 4 leaking
>injectors.
>
>So, I'm stuck scratching my head in an attempt not to replace half the
>engine bay to discover that a 5 minutes 10$ repair would have been just
>right.
>
>Any idea?
>
>
>
>Vincent.
>
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