Yamaha F150 Low RPM

[rivahboy]

nymart, I thought about you this weekend when a friend had a sililar problem with his Honda. Everything sounded like a fuel problem and he replaced filters etc and then it was recommended by the dealer to remonve the cowl. As crazy as that sounded it worked. What he had was similar to vapor lock they said and Honda was aware and did have a repair...under warranty was my understanding. Im not sure if you have had the repair or if you have it sheduled but just for kicks you may try that just to see. Although if you have the same problem with your kicker guess not. I agree with you, they should be a bit more durable than that. Good luck!

[Ron's 195DC]

I really can not believe this. Blame it on ethanol? They better get used to it, as this country is going ethanol, ask any corn farmer!

This is not covered under warranty? What to heck is the sense in having a warranty if they don't cover fouled / failed fuel injectors? Luckily I have the 6 year warranty, so I won't be covered for 6 years!

I really feel for you nymart, that's an awful hit for a $12k engine that's only 2 years old. Talk about being left out in the cold!!

[Stalker]

I really thought highly of Yamaha till know. I'll be spreading the word on this and be looking at which company overcomes this first. My car doesn't have any problems with Ethonal. Can Dick@merritmarine give any more insight on this?

[frankc]

My 06 150 is in the shop because of sudden lack of power. I will keep ya'll posted

[mojohn]

I have a very similar problem with a 06 F115. It doesn’t seem to get up to full power so I went from a 17 pitch to a 15 and saw no change in WOT plus the engine crank case is filling up with gas ?. The Yamaha dealer tell me its my fault because I don’t run the engine hard enough. Any Ideals ??

[Mud Runner]

Originally Posted by mojohn

I have a very similar problem with a 06 F115. It doesn’t seem to get up to full power so I went from a 17 pitch to a 15 and saw no change in WOT plus the engine crank case is filling up with gas ?. The Yamaha dealer tell me its my fault because I don’t run the engine hard enough. Any Ideals ??

Your 06 F115 should be boken in by now so the ususal unseated rings can probably be ruled out. I have heard that to properly seat the rings that the engine should be run hard every now and then. Another item that could cause your "making oil" condition is the posibility of a thermostat stuck open. It's not uncommon. I would try new plugs and a new thermostat. It's been discusssed at length on other forums. Goos luck.

[HappyGaffer]

I'm going through the same BS with yamaha now over the same problem. The bottom line is ethanol is in all gas in CA. Ethanol is not a contaminant; it is a government sanctioned fuel additive. It is Yamaha's responsibility to build engines that run on the fuel that is available to us. Otherwise the engines are utterly useless. According to the owners manual, counteracting additives is the purpose of all that expensive ring free I've been apparently wasting my money on. I'm not going to waste anymore of my time on this. It is now the responsibility of my lawyers.

[BarryB]

Remove the engine cowling.
Remove the cover on the air intake so you can see the butterfly valves.
With the engine off, move the throttle to wide open.
See if the butterflys are open all the way.

I once had an outboard that had lost power, the adjustment on the throttle cable had moved and the butterflys on the carbs were not wide open.

Just a thought.

Good luck.