i have an 89 johnson 120. i have had it for about a year and it runs great. i was out today and the horn went off for over heating. check for water flow and discovered port bank very hot and other bank only warm to touch. removed and tryed to clear water lines. made it back home with no further horn. checked then replaced thermastats. know the discharge water is hot when flushing. never this hot before. both banks hot to touch also hotter then before. any ideas as to the cause. thanx
