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-   -   Hitting a 4000 RPM limit. (https://www.offshoreonly.com/forums/do-yourself-boating-budget/261715-hitting-4000-rpm-limit.html)

sprink58 09-05-2011 05:49 PM
Hitting a 4000 RPM limit.
 
Took the Formula out today for a nice run up the coast. Seas were 3 ft or less and surprisingly not a lot of boat traffic.

I cruised along about 35 MPH which is about 3000 RPM for my 2: 260 MerCruisers. I decided to blow it out a bit and hammered it. For some strange reason neither engine would run past 4000 RPM.

I am running Alpha 1 drives 1.5 ratio with 19" props. Normally both will spin up close to 5000 RPM at full throttle.

Right now I'm thinking a fuel delivery issue between the tank and the engines. Any thoughts?


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