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Lawn Mower Smoking

The part(s) or condition(s) listed below for the symptom Lawn mower smoking are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

Most Frequent Causes for Lawn mower smoking

For the most accurate results, enter your model number.


Cause 1Carburetor is Letting Too Much Fuel In

If the lawn mower engine produces black smoke, this indicates that the carburetor is getting too much fuel (or "running rich"). If the carburetor float is stuck open, the engine will get too much fuel. Similarly, if the carburetor choke is stuck closed, the lawn mower engine will not be able to draw in enough air to create the proper air-fuel mixture.

Cause 2Carburetor

If the lawn mower engine produces black smoke, this indicates that the carburetor is getting too much fuel (or "running rich"). If the carburetor float is stuck open, the engine will get too much fuel. Similarly, if the carburetor choke is stuck closed, the lawn mower engine will not be able to draw in enough air to create the proper air-fuel mixture.

Parts
Cause 3Carburetor Repair Kit

If the lawn mower engine produces black smoke, this indicates that the carburetor is getting too much fuel (or "running rich"). If the carburetor float is stuck open, the engine will get too much fuel. Similarly, if the carburetor choke is stuck closed, the lawn mower engine will not be able to draw in enough air to create the proper air-fuel mixture.

Parts