First want to say thank you for the advice a few days ago about a different problem. Yall were dead on with your advice. So to everyone who helped, thank you. Now a new problem. 1985 70 H.P. Johnson. Runs great but today for the first time since ive owned the boat( bout a year) I ran longer than I usually do. Not far from the boat ramp on the way back in my horn starts going off. Now I know this is an engine overheat warning but it was peeing fine, so I know my water pump is fine. Is there any other reason that horn goes off? Also, what would cause engine to overheat if pump is ok? Could it be a faulty horn? Running mixed gas, vro disconnected. Any help would be great. Is there a way to check to see if water is being circulated like it should be?