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    1993 Mercruiser 7.4L 454 High Temp/Overheating

    Running idle in driveway with muffs on, temp getting upto 225+ in 5 minutes and setting alarm off. Just replaced impeller. Water is pumping through motor and out thu hull exaust. Water coming out exhaust is very hot. Any suggestions on this would be greatly appreciated....
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    1993 7.4L 454 Mercuiser Water Pump Impeller Problems

    Good Morning.... New to board... I have a 1993 Celebrity Status 240 with a 454 7.4l Mercruiser. Just switched fuel pump over to an electric a month ago. Took boat to lake and impeller went out. Installed new impeller, took to lake yesterday and impeller was out again. When I took waterpump...
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