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2000 F40 Yamaha has white smoke

fixer

New member
Had a bogging problem....Deale

Had a bogging problem....Dealer cleaned and synced carbs....runs better now...very strong...approx 200 hrs on engine...after warmup..(little run) at idle I see little white smoke from sguare exhaust port at rear of engine..then goes away..if I rev a little in neutral the white smoke appears again..quite noticable.... back to idle it goes away..the bottom of the carbs are wet with gas after shutdown....white porcelain on plug tips are white..only 6 gallons fuel used since he changed the plugs....Phil
 
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