Yamaha 115 losing speed and RPM in turns

c130nav

Recruit
Joined
Jul 22, 2011
Messages
2
I have a 2000 yamaha F115 fuel injection four stroke outboard. I am not getting full RPMs of 5600 going straight and when I turn I loose speed and the RPMs go down. I am only getting 4200 RPMs going straight. What is causing the problem?

Thanks
 

Woodnaut

Chief Petty Officer
Joined
Jul 4, 2007
Messages
634
Re: Yamaha 115 loosing speed and RPM in turns

Re: Yamaha 115 loosing speed and RPM in turns

What type of boat is this on? Any chance of extra weight in the boat causing addition load?
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
8,851
Re: Yamaha 115 loosing speed and RPM in turns

Re: Yamaha 115 loosing speed and RPM in turns

over propped, not set up properly, or a sick motor
 

c130nav

Recruit
Joined
Jul 22, 2011
Messages
2
Re: Yamaha 115 loosing speed and RPM in turns

Re: Yamaha 115 loosing speed and RPM in turns

The motor is on a pontoon boat. No extra weight.

I check the compression and the compression is good.
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: Yamaha 115 loosing speed and RPM in turns

Re: Yamaha 115 loosing speed and RPM in turns

lose, losing
 

Woodnaut

Chief Petty Officer
Joined
Jul 4, 2007
Messages
634
Re: Yamaha 115 loosing speed and RPM in turns

Re: Yamaha 115 loosing speed and RPM in turns

130 - Double check your toons to make sure they're not holding any water and the boat isn't pulling more draft than it should.
 
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