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Old 06-22-2008, 12:42 PM
boogerballs boogerballs is offline
Motorized Bicycle Member
Join Date: May 2008
Location: Los Gatos, California
Posts: 24
Default Re: spark plug oil leak

Could it be that after running it initially with the GNT plug, that the exposed threads in the combustion chamber filled with carbon deposits and won't allow the newer plugs, with possibly longer threads, to seat properly? Just something to check. Just measure the threaded area on each of the plugs to determine if the original GNT plug has shorter threads.
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