Hey guys, I was on the way back in the other day after cruising around 3400 RPM for about 15 minutes. Everything was fine, and I started backing down getting close to the dock and at about 3000 RPM I felt a sudden slight loss in power and the boat picked up a vibration. I can still pull through the RPM range pretty strong, but around 2500-3000 RPM it shakes bad. I ran it in my driveway yesterday trying to troubleshoot, and although it's not nearly as noticeable with no load on it, I can still barely feel the vibration and hear what almost sounds like a slight miss in the engine in that same RPM range. It's not intermittent or random, it's a very steady "not right" kind of sound. above 3000 it seems to smooth out, but that may just be b/c everything is spinning fast enough not to hear it.
My troubleshooting so far: at idle, pulled one plug wire at a time and could definitely hear a difference. checked all the wires at the cap and the plugs. checked the oil for water, checked the tranny oil, and the v-drive oil. everything seems fine. engine temperature is normal. no smoke or weird smells out the exhaust. checked the prop and shaft, and both look completely fine.
Thoughts? Thanks guys.
My troubleshooting so far: at idle, pulled one plug wire at a time and could definitely hear a difference. checked all the wires at the cap and the plugs. checked the oil for water, checked the tranny oil, and the v-drive oil. everything seems fine. engine temperature is normal. no smoke or weird smells out the exhaust. checked the prop and shaft, and both look completely fine.
Thoughts? Thanks guys.
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