The common spark plug problems in lawn mowers may lead to various problems such as difficult starting, unstable operation, and reduced performance.
Spark plug carbon accumulation: The engine may be difficult to start, run poorly, or even stall.
Troubleshooting: Remove the spark plug and check for carbon buildup, which may be caused by excessive oil or fuel buildup. If there is carbon buildup, clean or replace the spark plug.
Spark plug wear: Worn spark plugs may cause weak or unstable sparks, causing startup problems and unstable operation.
Troubleshooting: Check the spark plug electrodes and porcelain bottles for signs of wear or damage. If it appears worn or damaged, replace the spark plug.
Incorrect spark plug gap: Incorrect gap may lead to poor ignition and engine misfire.
Troubleshooting: Use a gap gauge or gauge plate to check the gap of the spark plug and adjust it according to the manufacturer's specifications.
Spark plug overheating: Overheating may cause electrode wear and spark plug failure.
Troubleshooting: Ensure that the spark plug used has an appropriate heat range. Installing spark plugs with the wrong heat range may cause overheating. If necessary, replace with a spark plug with an appropriate heat range.
Carbon deposits on spark plugs: Black soot deposits on spark plugs may cause unstable engine operation.
Troubleshooting: Clean the carbon deposits on the spark plug electrodes and porcelain bottles. Use suitable cleaning agents, such as spark plug cleaning agents, to clean spark plugs.
Spark plug insulator rupture: Damaged insulators may cause current leakage and poor ignition.
Troubleshooting: Check the insulator of the spark plug for cracks or damage. If any issues are found with the insulator, replace the spark plug.
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