Posted by John W. S. son of John S. [108.3.81.153] on Thursday, February 07, 2013 at 17:23:07 :
In Reply to: OT: Any Spark Plug guru's Out there? posted by Will (in IL) [98.215.27.52] on Thursday, February 07, 2013 at 16:36:30 :
Will,
Googled "spark plug wear chart" and a link to this chart and brief description came up on top. I hope it helps your diagnosis. As for the miss in the engine if you can pin point the cylinder maybe one of those in line lightbulb-style ignition testers will be able to tell you if the plug is getting juice or not.
copy and paste if the link does not work.
http://www.scribd.com/doc/8597440/Guide-to-Spark-Plugs
John W. S.
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