Reply To: 1972 85 hp V4 overheated…..

[billw]

When you say, “power reduced to an idle,” do you mean YOU reduced it to an idle or the engine dropped itself to an idle? There is no “Guardian” or “SLOW” system, so if it dropped ITSELF to an idle, you’ve got problems. Hopefully it wasn’t about to seize. Check the plugs for water, the sign of maybe a blown head gasket. Otherwise, I would pull the lower unit back off and inspect the pump again. Maybe something came loose after an hour’s run. Don’t forget to attach a snake wire or string to the shift wires, before to pull off the lower unit! That will make it easier to put back on.

Long live American manufacturing!