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I went out again tonight after reinstalling the old thermostat, and think it might be water related. Right from the dock it started overheating to 200 degrees at 800 rpm. The engine died again and the engine was definately hot so I took out the new impellar on the fresh water pump thinking for sure it was the problem, but it looked okay. My expectations were there would be no rubber left. I know looks don't tell the truth so will replace it, but when I opened the pump I could barely touch it it was so hot.

Is this normal for the freshwater pump to be hot? In addition, it was bone dry. Didn't know if this was normal either. Is there an easy way to look for circulation? I saw the water flow diagram and suggestion of a clogged manifold that was referenced in the trailers, but didn't know where to start.

I believe the boat was ran in saltwater as it was moored on a freshwater lake that dumped into the Gulf of Mexico. The engine looks great so if it did hit salt water the previous owner must have flushed it with freshwater.

Also after it died I checked fuel, and I had fuel at the carb when stroked. I also had spark at the plug. Both ideas gave me confidence so thank you.

Any suggestions would be appreciated.

It seems each time I take it out it's getting worse.

Thanks,
Bill