Hi all,
Got a hold of my brothers boat that has been sitting on a trailer for a couple years. Had the engine serviced and exhaust manifold and risers replaced. Took it out for a sea test the other day and noticed a "buzzing" noise that didn't sit right with me. This morning, I went down and checked the power steering level, it was low so I topped it off. Actuated the outdrive from side to side a few times to try and remove any air then fired it up. nice and quiet at 800 rpm idle, but once I got up to 2k rpm and started to actuate the outdrive from side to side, I hit a spot where things started to "wobble" and the noise really became pronounced. Video below, any ideas on what to do next?
Got a hold of my brothers boat that has been sitting on a trailer for a couple years. Had the engine serviced and exhaust manifold and risers replaced. Took it out for a sea test the other day and noticed a "buzzing" noise that didn't sit right with me. This morning, I went down and checked the power steering level, it was low so I topped it off. Actuated the outdrive from side to side a few times to try and remove any air then fired it up. nice and quiet at 800 rpm idle, but once I got up to 2k rpm and started to actuate the outdrive from side to side, I hit a spot where things started to "wobble" and the noise really became pronounced. Video below, any ideas on what to do next?

