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2004 Chevrolet Trailblazer Repair Question


Topics covered: Gas, Spark, Check engine light.
Mileage: 168 miles.

Asked on February 5, 2013

Chevrolet Trailblazer Gas Problem

My trailblazer check engine light is on. It flashes every time i feed the car gas. Its back firing bad. Its knocking as well. Also i when i change the spark plugs oil was on the bottom of my spark plug. What in the world is wrong with my vehicle?
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Answer

Replied on February 5, 2013

what is the code???

the oil may be from the tube the plug is in, not in the cylinder. the valve cover gasket will resolve that.

check the coils, if they are wet, they will not work

Roy

Tiny Answered by ASEMaster6371 (expert)
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