

Re: Audi fuel pump??

>From: larrymc@tekig5.pen.tek.com (J Mcclellan)
>Message-Id: <9207231636.AA14723@tekig5.PEN.TEK.COM>
>To: lmcstst@noah.ericsson.se
>Subject: Re: Audi fuel pump??
>Newsgroups: rec.autos.tech,rec.autos.vw
>In-Reply-To: <1992Jul23.155024.24847@exu.ericsson.se>
>Organization: Tektronix, Inc., Beaverton,  OR.
>Status: R

>First cut:
>Black smoke => too much fuel => fuel pump is delivering 

I was talking to guy here who drives a VW, he says that in his
manual it says that if the fuel pump fails it causes an over 
rich condition(in bose systems). Could this be so???

>check for a stuck-open injector or a broken or loosened 
>fitting that leaks fuel into the manifold.
>The clicking noise would be from the pump running continuously 
>to try to supply the extra demand.

The pump hardly makes any noise now, when I try to start the car, 
which is a bit difficult to hear over the racket of the starter motor.
So I checked the wire, which produced 11.5v when you try to start,
also the pump vibrates a little (as if its working).

>Possible cause could be a stuck pressure regulator => high 

Fine, I'll check this. Where is it?

>pressure in the fuel log breaks something, also causes fuel 
>pump to sound funny.

>Good luck, these things can be awfully frustrating.