I have a 1990 Force 120. Two days ago I started the motor for the first time of the season. Using the clams, the motor fired right off but I did notice the water coming from the lower unit was very hot. Next day, took the boat to the lake, it started fine and ran great. About 10 miles into the trip it started cutting out and losing power. I thought it might be vapor locking and open the gas tank a little. Ran great again. stopped to fish and then started up to come back to the docks and this time the motor would only run at about 20 -23 rpm tops (full throttle) at about 6 mph. Then the overheat buzzer sounded. I shut the motor down and waited for a few seconds. It started up right away but still had problems with power and overheat buzzer if I ran it at the 20 - 23 rpm mark. Resulted in having to come back to the dock at \3 - 4 mph at about 18 rpm. Any thoughs? I changed the water pump impeller 2-years ago. Could this be the problem and will that cause the loss of power?
