I have Merc 350 Horizon MPI closed cooling system. I am having to add Coolant on a regular basis. Now I am seeing some coolent in the bilge. Is it a big deal to replace seal in Heat exchanger? Are the certain hoses that could develope leaks?
Boat has whites nav on aft but nothing on front. Tried new bulbs, one balb starboard side burnt out. Then replaced both light fixtures port and star. Of course checked both breakers under counsel and bilge. No lights. Any fuses or hidden compartments. Also when I turn nav lights on EIM...