Have a problem. Motor is a 2000 Yamaha OX66 225HP, SX225TXRZ.
Today I put the boat in the water, and it seemed to idle a little rough, sort of had a shutter to it. When I went to put it on a plane the motor seemed to surge to about 2900 rpms and stay there. After about 5 seconds, it would jump up to normal RPM range and hold. Granted, I didn't run it very long above 4000 rpms, only a couple of seconds.
My questions is, where should I start to diagnoise the problem?
I did the following for preventive maintenace this fall:
Changed all three Low Pressure Fuel Pumps
Changed all the plugs
Changed the ball
Changed the water separator
Cleaned the screen inside the Vapor Separator Tank
Cleaned the O2 Sensor
Thanks for the help.
Today I put the boat in the water, and it seemed to idle a little rough, sort of had a shutter to it. When I went to put it on a plane the motor seemed to surge to about 2900 rpms and stay there. After about 5 seconds, it would jump up to normal RPM range and hold. Granted, I didn't run it very long above 4000 rpms, only a couple of seconds.
My questions is, where should I start to diagnoise the problem?
I did the following for preventive maintenace this fall:
Changed all three Low Pressure Fuel Pumps
Changed all the plugs
Changed the ball
Changed the water separator
Cleaned the screen inside the Vapor Separator Tank
Cleaned the O2 Sensor
Thanks for the help.