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1996 Mercury 150 EFI

Mkratzer

New member
Intermittent overheating @ higher RPM's. This thing will run nice and cool one day and then the next it will overheat, alarm out and shut down. I can then restart it and idle awhile and get it to cool down. Any help would be greatly appreciated.

1. Replaced water pump impeller and ride plate
2. Replaced t-stats
3. Replaced Poppet
4. Disabled the oilier and mixed the oil and fuel myself 50:1
5. I now have the whole water pump assembly on order including the base plate.
 
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