White smoke comes out while engine is running,running good.but only has 65 hr running time on it. Installed new oil filter,and changed oil. No Help. what next? Model # 40H777 Type 0242E1
The white smoke may have been caused by having water in the fuel, or fuel tank [due to condensation or exposure to rain and snow]. It may have been that the mower got tipped for cleaning purposes, blade inspection, etc. and oil from the low lying oil pan got into the piston.
Either way, I recommend installing a brand new spark plug and new gasoline [you can purchase a little gas siphoning hose for a dollar or so at any auto parts store] If you have gasoline left over in a can from last year it is safe to use it in your car as it mixes with lots of new gas, but not in your small mower tank as it is basically outdated fuel.
I would let the motor run for about a half hour to an hour it could be oil in your muffler if it is it will go away and not smoke anymore if it goes away then the next day you start it and it smokes again then goes away it is a valve seal if it doesnt go away it is either a bad head gasket (if its overhead valves) or a bad oil ring (sometimes they stick in the piston from sitting to long)
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I tried everthing you said do but no help.
One thing more whin i first crank the engine it takes about 5 Min before the smoke starts comming out, or when it gets hot.
Could this be bad rings at such low howers?
has oil leak i cant see
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