I have a 2005 Yamaha 115 F motor. Last season without warning the motor lost power and started smoking badly. I immediately shut it down and got towed in. I took the boat to a certified Yamaha dealer in Charlotte and they found that the #3 cylinder had come to pieces and the ring snapped and sent metal flying everywhere. We opted to replace the power head. We also had the injectors sent off to Yamaha to be sure we didn?t have a problem there. I have currently have 4 hours on the new motor and still working through the break in period. Last weekend I noticed oil leaking from the base of the motor at the water line. After removing the cowling I noticed oil coming from the intake. Again, I got towed in to be safe and towed the boat to the dealer for immediate inspection. I got a call from the dealer today. Again, the #3 cylinder is failing and the ring is broken. The dealer called Yamaha who immediately started back peddling stating that this is a fuel issue (ethanol). My question to the dealer is why the exact same issue on the exact same cylinder??? Since we replaced the powered isn?t there just as much of a chance that the computer or some other component that I have no clue about is to blame?
