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Old 03-03-2003, 10:23 AM
neileg neileg is offline
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Join Date: Sep 2002
Location: Newcastle upon Tyne, UK
Posts: 215
Is the dirty plug wet or dry?

Dry means that it is running rich or not firing all the time. Since the rest of the engine is not rich, chances are it's an ignition problem.

Wet means that it's burning oil, so probably a valve stem wear problem or tired oil seal.
Cheers, Neil
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