How do I troubleshoot a lawn mower that is shooting smoke out its side?

Answer by  ktmcatee (94)

A Craftsman 6.75 uses straight gasoline, not a gas-oil mix. If you used anything else, drain the fuel tank and start over. Also, look at the color of the smoke. Blue is burning oil, probably have too much. White smoke and you probably need to change out filters.

Answer by  y3636363 (1380)

Well that is really hard to trouble shoot. Perhaps the motor has some defects or it has worn out. From what I sense, you need to replace some parts. Search up google for precise instructions.

Answer by  safnme3 (179)

It depends on the color of the smoke. You can have bad rings in a mower just like a car. If you know the color go online and search for it by make and model. Try giving it a tune up first. It's cheap and could be your problem. Or it may be oil leaking.

Answer by  julie87 (222)

It is probably getting too much gas so I would have to say check the gas lines for cloggs or holes.

Answer by  Mowerman (16)

1) Has the engine been turned on it's side? 2) Have you over filled the engine with oil? 2) Test the compression. 3) Perform a leak down test.

Answer by  JimmyMace (74)

If the smoke is coming from the muffler, it is likely a result of oil leaking past the piston into the combustion chamber. The only way to repair this is to disassemble the motor and replace the piston rings. This is something that a small engine repair shop can do and will likely cost between $50-$75.

Answer by  japratt (1687)

If your lawn mower is starting to shoot smoke out of the side then you will need to but more liquid in it. Once the liquid is in then you can stop the problem.