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Posted by Chriscase [76.212.213.32] on Sunday, September 05, 2010 at 11:52:26 :
In Reply to: I Never Understood Why posted by copey [206.80.248.255] on Sunday, September 05, 2010 at 05:27:34 :
The oily/fuely/carbony gunk on the center electrode insulator shorts out the spark. Clean with carb spray, dry with a blast of compressed air, and they ought to be servicable. Heat migth help too, to dy out the stuff inside- plugs are made of several layers.
But they won't work if you haven't fixed the root problem, either flooding or poor spark.