Volvo RWD 120-130 Forum

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D-jet fuel pump testing 120-130 66

posted by  someone claiming to be Justin on  Mon Nov 20 04:40 CST 2000 [RELATED]

Hello. I was wondering how to test a D-jet fuel pump. I think the one I have is bad, because it doesn't work when I put it on my 1800, but want to be certain before I buy a new one. I only hooked up the electrical connections to test it. I can't imagine that the presence of fuel would matter, but you never know.

Thanks







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    Re: D-jet fuel pump testing 120-130 66

    posted by  someone claiming to be George Downs on  Mon Nov 20 16:51 CST 2000 [RELATED]

    If your pump sat with old gas in it for a long time it could

    be gummed up. Gums are natural decomposition products of

    gasoline. If you take the pump end apart, check to see if

    you can turn the shaft. If stiff, a little bit of your favorite

    penetrating snake oil and a lot of working back and forth may

    free it up, then you can reassemble with cleaned parts and

    new O-rings and it will probably be OK. Even with quite a bit

    of wear to the little rollers it will still put up adequate

    fuel pressure. Will naturally be more noisy.







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    Re: D-jet fuel pump testing 120-130 66

    posted by  someone claiming to be Mark Fleming on  Mon Nov 20 09:13 CST 2000 [RELATED]

    Justin,

    You mean you pulled it, hooked it up to 12V, and nothing happened? The presence of fuel shouldn't matter. The D-Jet pump sounds different when run without gas, but still runs. I know this from running out of gas. I don't know how long you can run it without gas without damaging the pump, but it should spin when you put 12V to it.

    Mark Fleming

    73 1800ES







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      Re: D-jet fuel pump testing 120-130 66

      posted by  someone claiming to be Justin on  Mon Nov 20 09:19 CST 2000 [RELATED]

      Yes, 12 volts, but no turning going on in there. Sparks, though. I was afraid it would be dead. I got 2 with the engine, FI stuff I bought and they are both non-functioning. Ugh!

      Thanks for the reply.







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        Re: D-jet fuel pump testing 120-130 66

        posted by  someone claiming to be joe on  Mon Nov 20 09:49 CST 2000 [RELATED]

        Have you taken the pump section apart to see if it's rusted? You

        might be able to free it up. If a pump's not stored with a little oil

        in it, rust sets in.






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