2015 F115 engine with 65 hours on it wants to over speed when throttle gets pushed above 2900 RPM. Initially I thought it was balance/trim issue. Happened a few times last season (new boater) and went away. Last night, engine sounded rough, but subsided after small trim adjustment. Then, after an hour underway, it really sounded like the prop was slipping, or a transmission in an auto slipping. Every time I pushed throttle up past 2800 RPM a small way 1/2 inch, it shot up to approximately 4500-5000 RPM with no sensation of power or torque.
I've had it winterized, summarized before using it this summer. Fresh gas was put in. Been using Yamaha lube with tankful's.
Any ideas before I pull it out and take it in?
I've had it winterized, summarized before using it this summer. Fresh gas was put in. Been using Yamaha lube with tankful's.
Any ideas before I pull it out and take it in?
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