Join Date: Feb 2010
Location: Narragansett Bay
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Re: Universale m -18 RPM won't go over 2000
You may also check any low point in the exhaust to be sure it's not crowded with old rusty bits from past elbow generations.
The next thing I'd check would be the stuffing box. Back it off a bit, which will likely allow more water to drip. Then run it up again and see if rpm changes. If it does, you may need to rebuild or replace it. If it was badly seized, it could have scored the shaft, but do the check first.
You are doing the runups underway at sea, not tied to the dock, right? In gear and WOT, at the dock, is not the same thing.
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In the harsh marine environment, something is always in need of repair. Margaritas fix everything.