Installed new botton end impellers this season and on the starbord engine I have an overheating problem at idle.
As soon as I increase the RPM's to 1500 the temp drops and she runs at normal op. temp. Go back to idle she overheats again.
It seems that I am not getting enough cooling water from the bottom end impeller??
It was fine last season with the old impeller? what could I have done wrong or what could be the problem.
The exhaust manifold also heats up more than usual how do I test the system to ensure I have enough cooling water.
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Problem #2.
On my port side engine the stat seems to open and not close I removed it and tested it following the proper procedure and it checks out OK.
Just back form installing it again and still have the same problem.
At idle it reached temp-- increase idle it drops the temp down ----(according to the temp gauge) let it idle the temp returns to normal??
As soon as I increase the RPM's to 1500 the temp drops and she runs at normal op. temp. Go back to idle she overheats again.
It seems that I am not getting enough cooling water from the bottom end impeller??
It was fine last season with the old impeller? what could I have done wrong or what could be the problem.
The exhaust manifold also heats up more than usual how do I test the system to ensure I have enough cooling water.
+===========================================+
Problem #2.
On my port side engine the stat seems to open and not close I removed it and tested it following the proper procedure and it checks out OK.
Just back form installing it again and still have the same problem.
At idle it reached temp-- increase idle it drops the temp down ----(according to the temp gauge) let it idle the temp returns to normal??
