Spark plugs of the right heat range and the engine at optimum performance should not need spark plug cleaning during its service life. If they get fouled like the ones our expert showed, it is a result of poor mechanical condition, poor fuel delivery, weak ignition coil output, high secondary resistance, bad fuel, restricted air intake. Correct the problem at the source
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January 28th, 2016 07:30 PM #7Last edited by jick.cejoco; January 28th, 2016 at 08:30 PM.
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