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Spark Plugs and Wires
Ford Explorer Sport
Ford Explorer XLT

What are some possible causes for oil fouled spark plug on lawnmower engine?


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Wiki User
May 13, 2012 8:25PM

Three possibilities. Overfilled with oil. Worn cylinder or rings. Worn valve guides. On most smaller engines, it's cheaper to replace the engine or the short block. If the engine has overhead valves and the valve guides are worn, a short block won't fix the problem.