Question about 1991 Saturn SL1

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Fuel pressure Hard starting and loses fuel pressure within a min after turning the key on.

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  • Ricky Gittins
    Ricky Gittins May 11, 2010

    Hello: Sounds like the fuel pump is bad but I would try to get a fuel pressure reading, And you didn't state what kind of car or the engine in it, (example: A Saturn has a fuel regulator in the fuel filter, this could be a costly mistake since the pump is $162. and filter/regulator is $62.) Gonna need more info. Good luck

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  • 6 Answers

Could be, fuel filter,pump,relay, turn key on but dont start, do you here the pump? should run bout 2-3 sec then shut off. if its really losing pressure while running, its most likely ur pump..

Posted on Jul 29, 2009

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It sounds like possibly a fuel pump issue. The pump may be losing its prime because of a sticking check valve in the pump. Instal a pressure gauge and watch the fuel pressure after shutting the car off. The pressure should not completely drop off it should only drop a few pounds. If it loses more than a few pounds of pressure quickly then it may need a fuel pump. This can also be caused by leaking fuel injectors so further diagnosis is needed to find the source of the leak

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