It ended up being an easy fix. Removed to check impeller and the gasket was ripped, replaced the gasket and reinstalled, perfect now. Thank you for the suggestions.
I have mercury 2002 225 Optimax temp starts rising only at idle normal temp around 130-135 but at idle it quickly starts rising till alarm sounds around 175 180 .However if i rev engine above 1100 rpm temp quickly starts to drop to normal .I have smartcraft gauge which is very useful because i...
