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  1. R

    260 Mercrusier overheating

    I have a 260 Mercruiser that has an overheating problem. All hoses are clear and new impeller installed. The water flows through all hoses except for the two on top of the thermostat housing. New thermostat was installed and I used the same sleeve that was in it. Picture are attached. Would this...
  2. R

    Mercuriser 260 overheat at low speed

    My 1985 Sea Ray 230 Weekender with a 260 Mercruiser overheats at low idle speed. I replaced the lower unit impeller even thou it did not need replacing. I removed the thermostat and it would not even cool at high speed. I installed a new thermostat (160 degree same as old one). I checked all...
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