I have a 99 Yamaha 40hp that makes a grinding clanking noise at low RPM's. I recently replaced water pump and took lower unit out and the noise continued. It sounds like something on the top of the motor with the flywheel would anything throw it off at low rpms but when run at higher rpms grinding clanking noise goes away and motor runs like new?? Compression 110 across the board. Strangest thing and it has me stumped, any help would be greatly appreciated! Thanks!
http://youtu.be/nVmtBPcKteY
http://youtu.be/nVmtBPcKteY
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