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    Overheats at anything over idle speeds, 1989 2.3 engine cobra

    I had an Impeller come apart and installed a new one. Took boat out and it overheats at higher speeds. I was told there is probably a blockage somewhere. I took apart impeller, T Stat, hoses and flushed everything I could and I have water pressure everywhere but still over heat at higher...
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    1989 OMC Cobra 2.3 engine Help Question please.

    I have an 1989 2.3 engine cobra. Lower unit water pump was just replaced along with the t-stat. Pump was melted. Took it to the water and let it warm up and it was running about 170-180 on temp gauge. Took boat for a test ride and at higher RPM's it overheats. Bring engine it back to idle and...
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