Why Is My Craftman Push Lawnmower Smoking? I Have Changed Oil, Thinking Maybe Water Got In It. Cleaned Out The Airfilter, Dumped Out Old Gas, Put New Clean Gas. Started The Mower And Smoke Coming From The Muffler, Thick White Smoke.


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Jerry Buerge Profile
Jerry Buerge answered
Many Craftsman push lawnmowers are now equipped with four-cycle engines. It's entirely possible that you have accumulated condensation in the oil, which within any older engine will allow an increasing consumption of oil as the engine operates.  If that oil is laden with water,  it will cause a white exhaust smoke.

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