1982 mercury black max 150

Mcmanama01

Recruit
Joined
May 15, 2022
Messages
1
I have a 1982 mercury black max 150. At idle the tell take water gets extremely hot but if I put it in forward and give acceleration the water cools down. Then gets hot again once idling again. It’s has new water impeller and new thermostats. Anyone ever have this problem
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,934
Sounds normal for that old style cooling design..does hot horn work? Doesi it go off?
 

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