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Mower blowing white then black smoke & running rough

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  • 252 Answers

If unit is ohv engine - i gather unit is using oil ?

may have a blown head gasket and air filter may be oil / petrol soaked
restrcting air flow

check oil level is correct ( and does not smell of petrol ) wet sumped and breather is working ( not stuck closed )

check for tight valve clearance

if all these are ok then might suspect worn rings / bore ?


may need further info on engine model - type

let me know and i will try help more if can

cheers

Posted on Aug 08, 2010

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1 Answer

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