Question about 1999 GMC Sonoma

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Truck wont start after it sits over night

My truck wont start after it sits over night unless i hold down and sometimes pump the gas.

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Sounds like the fuel pressure regulator is leaking try and locate the fuel rail and find the regulator remove the vacuum hose and have some one turn the key on it leaks gas its bad. Note on some of the 4.3L engines the regulator in under the intake

Posted on Jan 11, 2009

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