What to do when your lawn mower blows white smoke?

Answer 1

It sounds like you are burning oil. Is it dense, or just a thin cloud. Check your oil level, if it is too high, you can force oil around rings and burn it. The rings on the pistons could also be shot. What year/model/etc. is it? Also, be sure to check your oil every time before mowing, and after for that matter. This will prevent overheating, and also a premature rebuild.

Answer 2

White smoke is usually an indicator of moisture/water in the system where the "white smoke" is actually steam. There may be heavy condensation or water inside the muffler and the heat of the exhaust is turning it into steam. You can remove the muffler and drain it or you can just let all the moisture/water evaporate eventually.

Answer 3

white smoke is usually due to large amounts of oil in the muffler. if the mower was turned on its side for a period of time the oil will run into the muffler and when you start it it burns the oil out. after the large cloud starts to dissipate the smoke should start to change to a normal blue color and then disappear as it clears out

Answer 4

change the motor oil due to water being in it. If that don't fix it change the motor out if it is air cooled.

Answer 5

Blowing white while running