Have a AQ120 Volvo penta 4 cylinder engine. Runs great, except it runs very hot. No water running thru engine. Has new impeller, hoses. The cooling passages have all been cleaned out. Will run cool in a barrel of water. Put in the lake no water through system. Had to be towed back to dock! Any suggestions. I have heard line loose, caviatation,pump on engine to small? :
