Q:

Why is my lawnmower blowing white smoke?

A:

A lawnmower that emits white smoke probably has an engine that is burning oil. This is most likely caused by the oil being overfilled or the engine receiving an excess of oxygen.

Lawnmower engines also burn oil when they are filled with an incorrect grade of oil. Operating a lawnmower on a steep incline may also cause oil to burn; it is better for the engine and safer for the operator to mow across the face of a hill, rather than up and down.

Any air leak, even a small one, causes a higher oil mist than the crankcase breather is capable of handling. Check for air leaks in the crankcase or leaks caused by worn cylinders or rings.


Is this answer helpful?

Similar Questions

  • Q:

    Why does my diesel engine have white smoke?

    A:

    White smoke occurs in a diesel engine when the diesel fuel goes through the engine and reaches the exhaust without having been burned. This typically occurs due to the engine being too cool to burn the fuel, often resulting from low compression in one cylinder, problems with the fuel injection timing or a defective fuel injector.

    Full Answer >
    Filed Under:
  • Q:

    Why does white smoke come from an exhaust pipe?

    A:

    White exhaust smoke is usually the result of condensation and moisture buildup in the exhaust system; it can also be the result of burning coolant within the engine. When white exhaust smoke is thin and vaporous, it usually does not signify a problem within the car.

    Full Answer >
  • Q:

    Why is my lawnmower smoking?

    A:

    A lawnmower that is smoking usually indicates that either the fuel or oil compartments are overfilled, and the engine is burning off the excess. Blue smoke typically indicates that oil is burning and may be evidence of a carburetor problem. Black smoke indicates the carburetor is burning off gas.

    Full Answer >
    Filed Under:
  • Q:

    How do I mix oil and gas for my weed eater?

    A:

    Add two-cycle oil at the ratio recommended by the manufacturer to unleaded gasoline that has a minimum octane rating of 87, seal the container and mix thoroughly. Remix the fuel before each fueling.

    Full Answer >
    Filed Under:

Explore