Hi,
I have a small planing catamaran with 2 x 90 Yamaha outboards of 2006 vintage. They are both overheating above 3,800 rpm. I have changed the impellers and thermostats, checked the alarm sensors and they close at the right temp. I'm guessing some restriction somewhere? Boat is used in fresh/brackish water. Tell tale pushes a good stream of water, when running. Thoughts?
Thanks,
Cam
I have a small planing catamaran with 2 x 90 Yamaha outboards of 2006 vintage. They are both overheating above 3,800 rpm. I have changed the impellers and thermostats, checked the alarm sensors and they close at the right temp. I'm guessing some restriction somewhere? Boat is used in fresh/brackish water. Tell tale pushes a good stream of water, when running. Thoughts?
Thanks,
Cam
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