Question about 1995 GMC Sierra

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My 95 gmc wont start when hot

My truck will start when cold and run fine until you shut it off then it wont start unless you hold it to the floor and wind it a lot

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Check the fuel pressure regulator for leaks it may divert the fuel when warmed up,check all vacuum hoses for cracks if you think it's bad change it. turn key on and wait 30 sec.then crank and see what happens,fuel pump may be getting hot.if you can check fuel pressure at the rail for at least 35 psi.you can do this by removing the schrader valve and attach a hose with gauge.you should be able to hear the fuel pump for a few sec.when you turn the key on. try this when cold then hot see if you notice a differance.it seems to relate to a fuel problem.hope this helps,dave

Posted on Apr 13, 2014

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