View Full Version : 2000 yamaha 115 gas getting in oil

mark marlow
07-12-2006, 06:29 PM
"I first was told that i should not have used mobile one oil and it slicked the rings but i think they were wrong. gas gets in my oil, engine computer wont let it run fast when this gets high but you can change oil and go again.any suggestions?? I have ben told maby fuel pump diafram? Help"

Barry Willis
07-26-2006, 09:02 PM

I have the same thing. Used Mobile One twice. Then, switched to Yamaha last change. Gas is getting in my oil now. Overheat alarm sounded twice last time out. Dip stick shows more "oil" than I put in and checked meticulously several times. Overheat alarm happened at higher RPMs then goes away. Heard anything?"

mark marlow
07-28-2006, 04:38 PM
It is at dealer now been there two weeks but i don't think they have looked at it yet. I have seen a few post of people saying that they had same problem with this engine--but have not been able to get an answer yet. I don't think the oil was the culprit but an internal problem yamaha may be having -I will let you know