Why does my spark plug keep fouling?
Causes of carbon fouling include rich fuel mixture, clogged air filter, prolonged low-speed driving or idling, faulty ignition system, retarded ignition timing and spark plug heat rating is too cold.
Also question is, how do I know if my lawn mower spark plug is bad?
Here's How to Know if a Lawn Mower Spark Plug is Bad
- You can't get the engine to fire up at all.
- You have to tug extra hard for longer than usual on the rewind.
- Your lawn mower loses power while moving.
- The gas runs out quicker than it used to.
Beside this, why is my lawn mower spark plug wet?
Electrodes that have been worn thin are a sign of overheating, often caused by too much ethanol in the gas. If your plug has wet, oily deposits, it's time to take the mower in for servicing, because oil is leaking into the combustion chamber where it shouldn't be.
Should spark plugs be wet or dry?
For the optimal functioning of your lawn mower, the spark plug has to be in good condition – which means it must not be wet. If you notice that it is wet, you can take various steps to correct the problem, or you can choose to replace the plug itself so that it does not lead to lasting system damage.
Can bad spark plugs cause backfire?Can bad spark plugs cause backfire? It probably is not your spark plug causing your vehicle to backfire. While it is more likely to be something else causing the backfire, like the distributor cap. It is best after resolving this to replace your spark plugs, due to any buildup that has happened.
How often do you change spark plugs in lawn mower?
Will a bad spark plug cause a lawn mower to stall?Faulty spark plug warning signs
The engine misfires or runs rough. The engine starts, but stalls shortly after. There is a noticeable increase in fuel consumption during normal equipment use.