Question about 1998 Chevrolet K1500

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I have a 98 chevy with a 350 v8 and when i am going down the road it acts like it does not want to go and when you give it gas black smoke comes out of the tail pipe and the gas mileage has went down a lot

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Black smoke is unburnt fuel.
Air filter may be clogged with oil. If so, replace.
Fuel pressure regulator is not opening valve back to the gas tank, or valve is sticking.

For now, use a 12oz bottle of "complete fuel system cleaner" in your gas tank. Problem may go away on second day of normal driving, after treatment.

Posted on Oct 07, 2009

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I could be running too rich, is there the check engine light on?

Posted on Oct 07, 2009

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