View Full Version : Uh oh
11-07-2007, 06:43 AM
hard white deposits on a spark plug? That's not burning coolant is it? Hopefully it's just a sign of too much advance on the timing?
11-07-2007, 08:07 AM
I think too much advance usually makes the insulator white and the electrodes will either be blued or burned. White deposits are usually a contaminant.
11-07-2007, 08:16 AM
By the way this is on all 4 plugs to a greater or lesser degree.
11-07-2007, 08:23 AM
Age of plugs? Any vapor showing at the tailpipe in the morning (more than usual these cold mornings)? Smell of coolant?
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