You may have a blown head gasket. The white smoke may actually be steam from coolant leaking into the combustion chambers. If your car is using a lot of water, this would back up the blown head gasket theory.
White smoke is coolant and black smoke is oil. I agree that this is likely a problem with your head gasket.
Injectors, timing, low cylinder pressure.
the valve guides could be worn out The carburetor is running fuel rich and needs adjustment. If it were valve guides or rings the smoke would be blue
Smoke can come from several things. White smoke when first starting on a cold day is normal. Black smoke indicates the wrong fuel/air mixture. Blue smoke indicates that the engine is burning oil.
White smoke is eaither a blown head gasket or you have water in the fuel system. This is not to be confused with flooding an engine and seeing white vapor coming out of the exaust in which that would NOT be smoke, it would be gas vapor's. If your burning oil, the smoke will be blue and smells of burnt oil.
you're gay, that's why
Lawn morwer white smoke when starting and again when turning it off. Does this hurt it. Do i need oil
One reason could be a worn engine.
A blown head gasket
Failed internal oil seal
Could be that the lawn was wet and that the white smoke was actually steam.
normally when the engine emits bluish white smoke, the engine oil mixes up with the gasoline in the combustion chamber-as a result of loose compression. White smoke - Water in the exhaust, head gasket gone? check for emulsion on filler cap and do a compression test. Blue smoke - burning oil, check valve stem oil seals, valve guide clearances or piston rings Black smoke - Fuel mixture too rich, go to a garage and have it tuned.
Service or replace the engine. A vehicle does not emit much smoke if it is in good condition and running properly.