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Showing results for tags '97 hewes light tackle 20'.
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Lately I ‘ve been getting the overheat alarm and then Limp mode only at high RPM, like close to WOT. If I shut it down, wait 30 seconds and turn the key on, the alarm goes off and I can run all day under 4500 rpm. I started out by changing thermostats, checking the poppet valve (old style) and cleaning it. No change. Recently put a new water pump in. No change. Checked both thermo switches per the repair manual. They are both good. Pulled the heads and checked all water jackets. Some minor blocked areas but have always flushed with ears with fresh water after running in salt. Heads looked pretty good. Cleaned everything up and installed new head gaskets. I also installed the new mushroom style poppet valve. I’m hoping I finLly got this solved but cold and rainy here so no trial run yet. Had anyone had a similar problem? Could it be the poppet valve? I swear the old one looked fine. Thanks. PS this engine has 588 hrs on it