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1994 GMC Sierra 4X4 - turns over no fire

How do I check to verify if my fuel pump is faulty? I have replaced to fuel pump relay and the engine still turns over fine but does not fire.

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  • Anonymous Mar 23, 2014

    no power going to check engine diagnostic plug

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Checked volyage at relay then grey wire at pump harness. Found the fuel pump was faulty.

Posted on Jul 20, 2008

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