Last Saturday (9/17) I took the boat to try it out but I never got it off the trailer, this was the first time Iíve put it in gear since Iíve owed it and it made a loud clunking while idling in forward and reverse gears. This past Saturday I disconnected the drive couplings so I could dry run it in my driveway and I still had the same noise, it seems to quiet down when I gave it gas. I changed the tranny fluid earlier this year with 15W-40 oil and itís filled up properly. While I had it in the water, a couple of times it stalled just after making a clunk. Iím not sure what to check? When I had the motor out I did not see anything wrong with the pressure plate but then again, I donít really know what I should have been looking for.
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Some back ground: I bought the boat this spring with spun main bearings so I never heard it run, the boat has 375 hours on it. Any suggestions?