Tag: smoking lawn mower engine

Lawn Mower Repair Tips, Riding Lawn Mower Repair

Riding Lawn Mower is Making Blue Smoke

If you are seeing blue smoke coming out of your riding lawn mowers engine, that means it is actually burning oil. This means that the oil is getting into the combustion chamber. It can enter past the piston rings, valve guide or through the crankcase breather.

The first and most simple thing to do is just check the level of the oil to make sure that it is not overfilled. When the oil is overfilled, it will come out of the crankcase breather and into the carburetor throat and then move into the combustion chamber.   And of course when it is in there it will burn and create the blue smoke. Wah Lah!

The problem must be corrected though as it will foul out the spark plug and the engine will die. It will also carbon up the inside of the cylinder and create more problems down the road.

A riding lawn mower repair shop is what you will need to resolve this problem and correctly troubleshoot the issue. Visit our Locations page for a shop near you.

Your riding lawn mower can be repaired and back to good running condition with the right mechanic.

Lawn Mower Repair Tips, Push and Self-Propelled Lawn Mower Repair, Riding Lawn Mower Repair, Zero Turn Lawn Mower Repair

Lawn Mower has Blue Smoke Coming From Exhaust

The infamous blue smoke coming from the exhaust is a sign of burning oil. You can also verify this by removing the spark plug. You will see a shiny black or gooey appearance on the electrode side.

Now you may have simply overfilled the engine with oil so that is the first place to start. Remove the dipstick, wipe it off and then re-insert. Pull it out and then check the level. On Asian brand engines, you do not need to screw the dipstick into the case, simply dip it in and put it back out.

If the oil level is fine, then something internal may be causing the problem. You could have a blown head gasket, a bad breather valve, your piston rings are worn or the oil seal for your intake valve is bad.

These are items that would be best diagnosed by a lawn mower engine mechanic as they have the proper tools and information to do these tests. You can find a lawn mower shop near you by visiting our Locations page. Let them know the symptoms of your lawn mower engine problems and give them as much information as you can to assist with the proper diagnosis.