2000 Yamaha 225 OX66 hesitation at low rpms

msu202020

Cadet
Joined
Apr 25, 2010
Messages
12
Motor hesitates around 1500 rpms. If you go full throttle, the boat jumps on a plane fine. If you try to accelerate slowly, it will hestiate from 1200-2000 rpms, you have to go full throttle to get it to jump up and run fine. Also, the motor idles fine when in neutral, but when you go just into gear, the motor idles very low, around 500 rpms.

I checked the fuel pressure while running, including when having the hesitation and the fuel pressure remained constant.

I also used the winky blinky, it displayed a code 1 through out.

Anybody have any suggestions?
 

cousinabe

Senior Chief Petty Officer
Joined
Nov 13, 2001
Messages
765
Re: 2000 Yamaha 225 OX66 hesitation at low rpms

When was the VST last serviced?
 
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