if you were daft enough to run the fuel pump in a no lubricating medium such
as water you deserve to have spent 30o bucks for doing so. It is a fuel pump
not a water pump. You obviously wrecked the rubbers which are "tuned" to the
fluid they are supposed to pump!


"BBO" > wrote in message ...
> "sealdogfish" > writes:
>
> > Got a major problem here kindof i think. Got a 1991 Audi 100 with a 5
> > cylinder 2.3 litre fuel injected engine.
> > you can crank it for ages and it will fire once or twice or sometimes
> > not fire at all and just keep cranking. This only happens when the
> > engine (water) is cold. If I spray ether into the intake manifold it
> > fires continually until I stop spraying but still will not start.
>
> If you are able to start and have the car "run" on ether, there is nothing
> wrong with the ignition system, but the car isn't getting any fuel.
>
> How long is it since the fuel-filter have been changed? It might be
> clogged so badly that the pump cannot get enough pressure. On my car the
> fuel pressure should be around 4 bar.
>
> Sounds like the fuelpump have gone bye bye. Usually you will be able to
> hear it going, but it isn't delivering enough pressure. Had the exact
> same problem on my car. A '93 Audi 100 2.3E.
>
> I first tested the assuption with taking out the pump and cleaned it in
> a bucket of water while applying power to it. I then washed the pump
> with brake cleaning fluid in the same manner. I let it dry and
> reinstalled.
>
> The car would then start, but the pump sounded like a hive of bees so I
> changed it for a new one. It cost me around US $300. Also: Change the
> fuel-filter if you change the fuel-pump. If not you'll have the same
> trouble in very short time.
>
> --
>
> ------------------------------------------------------------------------
> Wenn im Zweifel, Volleistung! DoD#2101
> '93 Audi 100 2.3E When in doubt, floor it!