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Old 06-07-2007, 09:33 AM
boatbob2 boatbob2 is offline
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merc overheating

hi,in the merc manifold,there is a riser with a replacable insert.if rust is around this insert (tube) the engine will overheat.also sounds like a valve,piston or headgasket problem,also you may have to re-pitch the prop,too much prop will not allow the engine to rev.
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