9.9 Yamaha starting one cylinder - oil on spark plug

Bearded Lady

Cadet
Joined
Jul 6, 2002
Messages
13
My 9.9 four stroke stars grea, but I think it is running on only one cylinder. All of a sudden it powers up and runs smoothly. I have been noticing some oil dripping down the side when tilted and the lower plug is much more oily than the top. Any ideas ? I haven't been losing much oil to speak of ??
 
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