90 HP Yamaha acceleration problem when cold

A&J_Dad

Recruit
Joined
Mar 12, 2011
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I have a 1988 90 HP Yamaha 2 stroke outboard. When I first run it it will not accelerate, it sounds like it is hitting a rev limiter. When I start it, it idles just fine and runs great. But sometimes it will takes it 10-15 minutes of running for it to open up. After it has ran for awhile, the problem seams to go away until it cools down.
 
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