Spark Plugs and Wires
Oldsmobile Cutlass Supreme
Ford Escort ZX2

Is oil supposed to be present in the cylinders where the spark plugs are?


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No Wet, oily deposits. Will cause weak spark and eventually misfire.Fault: worn bores/piston rings or valve guides; sometimes occurs (temporarily) during running-in period. Plugs can be re-used after a thorough cleaning. [ See pictures] [ A Short Course on Automoble Engines] Good Luck and Remember.
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