Posted by David on February 07, 2001 at 21:06:30:
I have a '99 60 hp Merc that doesn't like cold water. Circulated water discharge is still cold when it comes out of the motor. Ran great til the water got into the forties. Only has trouble idling (trolling). I replaced the plugs. No help. Anyone have any suggestions? Hotter plugs? Additives?
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