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I have a 1998 protege 1.5 litre. Changed spark plug wires and spark plug. About every 5 weeks spark plugs will begin to arc randomly and progressively get worse over the next 3 weeks untill i have to replace them . Had it put on computor and was told plugs are bad. I keep having to replace them . It runs fine after i change them but then starts arcing in the spark plug well. I noticed it is arcing from base of ceramic insulator to the head. Never seen this before but can it get too much voltage or not able to disapate heat fast enough.