What is my spark plug telling me?
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01-09-2013, 06:55 PM
Join Date: Mar 2012
Location: Long Beach, CA
What I Drive: 2003 dark shadow grey metallic ZX3
Buy-Sell-Trade Rating: (
looks like ash deposits from burning excess oil in #4
those deposits will cause a misfire at the plug
Next oil change, pull the new plugs and take a look, see how much has built up in a few thousand miles.
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