adallak Posted October 27, 2004 Report Share Posted October 27, 2004 I have recently replaced the spark plugs. I sprayed some WD-40 on the threads of new plugs for smooth installation. They were in use for a couple of weeks (some 300 miles). Today I noticed a reddish thin dust coating on the insulation when I was treating the plugs with some dielectric grease. Should I have them tightened harder? The saddest thing in life is wasted talent Link to comment Share on other sites More sharing options...
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