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Thread: overheating at 3000 rpms
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01-22-2008, 09:33 PM #1Member
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overheating at 3000 rpms
I have a 33' avanti center console with twin 250 yamaha two strokes. The port motor loses water pressure at 3000 rpms. Yamaha replaced the entire head and put a new water pump in. Still loses water pressure at 3000. Yamaha switched the motors and the problem followed the side of the boat and not the motor. I had the hull surveyed and nothing is wrong. The only suggestion I have had is to check the exhaust housing adapter plate. I can't find it on the schemetic in the manual, and I need suggestions. I have owned the boat for twenty years and never had a problem. Will low water pickups help?
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01-23-2008, 04:41 AM #2
when they swapped em over , did they swap just the powerheads or complete engines.?
THERES A FINE LINE BETWEEN A GOOD WHEELMAN & A COMPLETE NUTCASE
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01-23-2008, 07:25 AM #3
Have you added anything to that side of the boat like a transducer or water pickup?
"One of the penalties for refusing to participate in politics is that you end up being governed by your inferiors". Plato .
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01-23-2008, 07:55 AM #4Member
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Both engines, and then swaped the lower units. Actually tried it both ways.
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01-23-2008, 07:59 AM #5Member
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I have not added anything to that side of the boat. The only thing I had done was to have the bottom painted. I can't imagine that could have anything to do with this problem.