Re: Lightwin 3 HP gets hot

[aquasonic]

I own a several of the OMC threes, and they definitely run on the hot side. Before you left it to run unattended for a few minutes, were you running it at a high rate of speed? They heat up very quickly at high RPM, and may not be able to cool down in a barrel without shutting down for a while. That tank water temperature just keeps going up with run time which leads to a hotter motor, which leads to hotter tank water.

Larger motors just seem to cool better, but with the threes they can easily be overheated in the tank. The flush plug is showing good flow, but as you know, that is prior to the water entering the powerhead. With both the plug and the relief ports having good flow, it seems as though the impeller, water tube grommet, and water tube are functioning ok. Still, pulling the powerhead and cylinder head, and blowing out the cooling ports with compressed air is something that can only be a good thing.

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