How to test the fuel pump?

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snpboy - 08 Sep 2006 00:08 GMT

Since my 940 turbo wagon still will not start i tried banging on the fuel
under the seat and it still is dead. how does one determain if the front
or back fuel pump is dead and how do you test them. thanks.

Kasoma Duplantis

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James Sweet - 08 Sep 2006 00:48 GMT

> Since my 940 turbo wagon still will not start i tried banging on the fuel
> under the seat and it still is dead. how does one determain if the front
> or back fuel pump is dead and how do you test them. thanks.
>
> Kasoma Duplantis

Apply 12V to the pump and see if it runs, if it runs loosen the banjo
bolt and see if pressurized fuel sprays out.

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~^ beancounter ~^ - 08 Sep 2006 00:56 GMT

when my mechanic was testing to see if i had fuel pressure (b4 he told
me about gentaly tapping the pump) he dove under the hood and quickely
determined there was no fuel pressure...some line or hose going into
the injection system i would guess.....i think he wrenched loose one
line or bolt...

> > Since my 940 turbo wagon still will not start i tried banging on the fuel
> > under the seat and it still is dead. how does one determain if the front
[quoted text clipped - 4 lines]
> Apply 12V to the pump and see if it runs, if it runs loosen the banjo
> bolt and see if pressurized fuel sprays out.

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zencraps@comcast.net - 08 Sep 2006 01:39 GMT

> when my mechanic was testing to see if i had fuel pressure (b4 he told
> me about gentaly tapping the pump) he dove under the hood and quickely
> determined there was no fuel pressure...some line or hose going into
> the injection system i would guess.....i think he wrenched loose one
> line or bolt...

He loosened up the fuel delivery line at its fitting.

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