I have what it looks like oil on a lot of my spark plugs when I change them out. Some wet and one or two dry. I’m hoping it’s just the head gaskets, because I have been driving the car with a rich tune. The plugs always end up with carbon build up and the car back fires. I always have to rev the engine to clear it out or smash on the gas pedal and drive it at high rpms to clear it out. How can I find out myself if it’s the piston rings or my gaskets without taking it to a mechanic?
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