Exhaust elbow and cooling

Patrick McAneny

I think my boat has been running hot for for a couple of years . I just ran it for about 45 minutes after launching and it ran much cooler than previously. The only thing I have done , is that I cleaned the exhaust elbow, it was not that bad. However I also reamed out the channel that I believe water passes through. My question... If that channel is partially blocked would that result in the engine runner hotter.
Pat SM#123

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