Friends,
Was out on my '08 225 on the Ohio River over the weekend when the F250 seemed to lose some of it's power and torque. It would still run but has a miss to it and I couldn't get it much over 5000 RPM WOT. The MPG indicator was only showing at best about 2.8 @ 4000 RPM. It's usually 3.3 -3.5 properly trimmed out at 4000. The engine only has about 125 hrs on it and has been running fine since the 100 Hr service at the end of last season. Took it to my local Yamaha dealer Monday AM. He called me Monday night and he asked me if I trolled a lot or ran @ idle speed a lot because the motor seemed to be "making oil". I told him I didn't. Called him back Wednesday AM to get an update and he said the computer showed that the coil on the center cylinder on the starboard side of the motor was bad. Yamaha replaced it under warranty as well as all 6 plugs. The dealer pumped out the excess crankcase oil and I got the boat back today. No charge to me, all under warranty. I guess that dead cylinder caused the "making oil" with the blow by from having a dead coil.
Yamaha said they have never had a coil go bad like this. Have any of you all ever experienced anything similar to this? I'm completely satisfied with how the problem was resolved, I'm just curious if it really is that rare of a situation or if I should get ready for the other five coils to go bad as well.
Was out on my '08 225 on the Ohio River over the weekend when the F250 seemed to lose some of it's power and torque. It would still run but has a miss to it and I couldn't get it much over 5000 RPM WOT. The MPG indicator was only showing at best about 2.8 @ 4000 RPM. It's usually 3.3 -3.5 properly trimmed out at 4000. The engine only has about 125 hrs on it and has been running fine since the 100 Hr service at the end of last season. Took it to my local Yamaha dealer Monday AM. He called me Monday night and he asked me if I trolled a lot or ran @ idle speed a lot because the motor seemed to be "making oil". I told him I didn't. Called him back Wednesday AM to get an update and he said the computer showed that the coil on the center cylinder on the starboard side of the motor was bad. Yamaha replaced it under warranty as well as all 6 plugs. The dealer pumped out the excess crankcase oil and I got the boat back today. No charge to me, all under warranty. I guess that dead cylinder caused the "making oil" with the blow by from having a dead coil.
Yamaha said they have never had a coil go bad like this. Have any of you all ever experienced anything similar to this? I'm completely satisfied with how the problem was resolved, I'm just curious if it really is that rare of a situation or if I should get ready for the other five coils to go bad as well.