Question about GMC K3500

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Extreme hard start when warm. Keeps coming up

Extreme hard start when warm. Keeps coming up with p0175 code.Lack of power. Poor economy. O2 sensor replaced,MAF replaced, injectors replaced, fuel regulator replaced.

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Have the cat checked,sounds like a restriction in the exhaust,or the return line to the tank is restricted,remove the fuel cap,and blow air back to the tank with compressed air,threw the return line,where the pressure regulator bypasses the fuel back to the fuel tank.

Posted on May 04, 2010

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Posted on Jan 02, 2017

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