2. Coolant in the combustion chamber. This can also cause white smoke from a lawn mower engine. Coolant can get into the combustion chamber if the head gasket is blown or if there is a crack in the cylinder head.
3. Excessive fuel mixture. If the lawn mower engine is running too rich, it can produce white smoke. This can happen if the carburetor is not adjusted properly or if the air filter is clogged.
4. Worn piston rings. Worn piston rings can also cause white smoke from a lawn mower engine. When the piston rings are worn, they don't seal the combustion chamber properly, which allows oil to get into the combustion chamber.
5. Damaged valve seals. Damaged valve seals can also cause white smoke from a lawn mower engine. When the valve seals are damaged, they don't seal the valves properly, which allows oil to get into the combustion chamber.
6. Bad fuel injector. If the fuel injector is bad, it can cause the engine to run rich, which will create a lot of white smoke.
If you see white smoke coming from your lawn mower engine, it's important to have it diagnosed and repaired as soon as possible.
Here are some more signs of engine trouble to watch out for:
- Black smoke: This can indicate a problem with the spark plug or the fuel injector.
- Blue smoke: This can indicate a problem with the piston rings or the cylinder walls.
- Gray smoke: This can indicate a problem with the head gasket or the valves.
- Oil leaks: This can indicate a problem with the oil pan gasket or the valve cover gasket.
- Coolant leaks: This can indicate a problem with the radiator hose or the water pump.
