boat is not accelorating past 15 miles per hour

scotie

Recruit
Joined
Jan 30, 2011
Messages
1
1988 150 HP yamaha engine goes in reverse but does not reverse with normal power and goes forword but will not accelorate past 15 mph not sure what the problem could be it also kicks back and forth between 3000 and 4000 rpm when I have the throttle up when i am warming it up. It starts fine and and engine sounds good while just idleing. What could be the problem? Thanks for any advice.
 

oops!

Supreme Mariner
Joined
Oct 18, 2007
Messages
12,932
Re: boat is not accelorating past 15 miles per hour

hi....welcome to iboats...

while i am not a outboard mechanic......i can say.....check the hub of the prop.....there is a possibility you have a spun hub
 
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