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Support >>> Title: oil fouling
Added:2010-03-31  Click:6203   

Black wet shing oil deposited on the firing-end of plug.

Cause:Worn piston ring, worn valve,ormisadjustment of carburetor,causing ouve-rich fuel mixture.

Action:The fundamental reason of oil fouling is not the incorrect choive of spark plug,hut it can be solved temporarily by a hotter type of spark plug.

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