craftsman mower tractor 21 hp

jean67July 20, 2014

White smoke go out the exhaust. Burn oil smell detected. What are causing this trouble?

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bill_kapaun

Posting the Sears 917.xxxxxx or engine brand, model type/spec could be useful.

Likely the carburetor needle& seat is leaking through and filling the crankcase with gasoline.

SMELL the oil for the presence of gas.
Else, possibly a blown head gasket.

    Bookmark   July 20, 2014 at 10:29AM
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jean67

Thank for answering, tracteur model 944.609260

    Bookmark   July 21, 2014 at 8:38AM
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bill_kapaun

The engine should be a-
Briggs 331877-1234-B1.

They are somewhat susceptible to blow head gaskets, but CHECK the OIL first for the presence of gasoline.
It will be a STRONG smell.

Don't run the engine until this is resolved, since the "thinned out" oil has VERY POOR lubricating abilities.

    Bookmark   July 21, 2014 at 1:22PM
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