Lawn Mowers


What will a bad Spark Plug do for a Lawn Mower

What will a bad Spark Plug do for a Lawn MowerWondering what will a bad spark plug do for a lawn mower engine? It will make it difficult to start at the very least. It may cause the engine to run roughly. A bad plug may cause the engine to burn more fuel than normal ans spew more noxious exhaust. Finally it just may not start at all. Leaving you to wonder how to get your grass cut and who is going to repair your lawn mower. There may be a number of things wrong with your lawn mower engine. However checking your engine’s spark plug is one of the easier things to do.

What will a bad Spark Plug do for a Lawn Mower – Clean or Replace

The simplest thing to do is to replace the spark plug with a new one after properly setting the gap on the center post. Replacing the spark plug will ensure that there is no soot or deposits that might be inhibiting the spark that is needed to ignite the gasoline in the combustion chamber.

You can also clean the existing spark plug. You will need to use a wire brush to remove all deposits from the spark plug. Use a bit of sand paper to clean the end of the center post and the rest of the surrounding area. Make sure there is no carbon deposits that are adhering to any metal parts. Reset the gap according to the manufacturers instructions. Reinstall the plug and test the engine by starting it to see if this makes a difference.

If not you may have other issues that need to be addressed. There could be a bad gasoline filter or a gummed up carburetor from old gas sitting too long in the gas tank. You will need to get these cleaned and re-calibrated for your engine to run smoothly.


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