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Recent content by Boatguy272

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    2002 Mercury 150 EFI overheat

    I have just purchased a boat with twin 2002 150 EFI's. (400 hours all fresh water ) both water pressure guages read 2-3 PSI at idle, and dont get much above 5-7 psi at 4000 RPM. I changed both impellers with complete kits with no change. A long idle will cause an alarm that im assuming is...
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