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Hi l have a 115 V4 Yamaha Outboard that hasn't yet done 10 hours. When giving it a run after a few minutes it started backfiring. What is the problem?
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always give the model # so everyone knows what motor you are having problems with.
Sounds like a lean sneeze -
Yamaha V4 Backfire
Yep if its backfiring out of the carbs it is running to lean and could eventually burn a piston or blow out a reed valve.You need to back out the idle adjustment on both carbs until the coughing backfiring stops.Comment
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