jerryb Posted November 14, 2008 Share Posted November 14, 2008 Im trying to understand why a plug would just stop working. My KA24e-T was running fine one night. The next evening it ran like crap with horrible idle and back firing. In an effort to find out why, I randomly pulled wire #4....with no difference. !No combustion in #4. So I followed with Automechanics 101...check for spark...check injectors and compression. All was fine. SOooooo on recommendation I threw in new plugs as the old one appeared a bit oily and wet ...no damage. The car purrs! Can someone explain to me why this happens...what stops a spark plug from sparkin:confused: If I understand why perhaps I can prevent it. Quote Link to comment Share on other sites More sharing options...
naviathan Posted November 14, 2008 Share Posted November 14, 2008 Not sure this helps, but I've had the same problems when I didn't use NGK Copper plugs. It seems like my Z will foul anything else I put it in it within a month. Quote Link to comment Share on other sites More sharing options...
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