how is gas getting in crankcase

Asked by popsken Dec 30, 2016 at 02:06 PM about the 1993 GMC Sierra 1500 K1500 4WD Extended Cab LB

Question type: Maintenance & Repair

gas in oil and truck won't stay running

1 Answer
10

Medved1992 answered 7 years ago

You probably have a bad fuel pressure regulator valve. It's letting full pump pressure get to the injectors.

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