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2026. 6. 30. 작업

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What Could Cause Flash Over / Arcing to Reappear on New Plugs?

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I think your problem is your plug wires. I think they are leaking along the boot and down to ground (earth). With this loss of energy, you'll also see the large carbon buildup on the business end, due to unburnt fuel deposits. Since you are saying you are seeing the carbon tracking on the number one plug again , this is my reasoning for telling you the plug wires. Since they haven't been changed, this is the most likely culprit. Also, whenever you put new plugs or wires on, use dielectric grease . Squirt a little into the boot just before you put it onto the spark plug. This will do two things for you. First, it will keep electrical leaks like this to a minimum. Dielectric grease doesn't transmit electricity, so it becomes an insulator. Secondly, it will also keep the boot from adhering to the porcelain of the spark plug. If you ever need to take the boot off the plug for any reason, it will come off a lot easier.