02-05-2009, 06:29 AM
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CC Member
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Join Date: Oct 2006
Location: Virginia Beach,
va
Cobra Make, Engine: BDR #250
Posts: 234
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Not Ranked
Ron,
Yes the lack of anti sieze is the main reason for them breaking, followed closely by how long the suggested interval to change them.
Wayne,
The threads don't extend into the combustion chamber. Fowled or siezed threads is not the issue and is commonly suggested as the problem. The penetrating oil is used to break down the carbon build up on the ground electrode shield not to free the threads. You must first just turn the spark plug 1/8 of a turn open very slowly this will allow the penetrating oil to whick down the threads and end up breaking down the carbon below the threads on the electrode shield...If you look at the TSP it show this in detail...Mac |
Threaded Mode
