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Katzz

Fuel pressure loss

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My 1999 Sierra 5.3 4 x 4 extended cab doesn't keep its fuel pressure after the key is turned off.  The first crank in the morning is a normal start.  After that I have to crank continual.  Any ideas?  Fuel pump?

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99's have a fuel filter mounted between the tank and the engine. Change it with either an AC-Delco or Wix and then check fuel pressure with a gauge.

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Already changed and no difference Thanks for the idea

 

Katzz

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