The cooling system inside the engine is composed of a raw-water circuit and freshwater loops. Small clogs will sometimes appear in places like the raw-water strainer, cooling hoses or other mechanisms found in the vehicle. You’ll need the following items in order to complete the project:
3″ Heater hose
Take off the hose clamp. Remove the hose from the raw-water pump’s output nipple. Attach the nipple to the heater hose. Secure the hose clamp. Turn the engine over. Allow it to run for one minute. Put the heater hose inside the bucket. Turn off the engine. If the water pump isn’t averaging four gallons per minute, this could indicate a damaged water pump. Connect the raw-water pump to the cooling hose. Tighten the hose clamp with the screwdriver.
Take off the hose clamp. Remove the clamp from the heat exchanger. Put in the heater hose. Use the screwdriver to tighten the hose clamp. Put the bucket underneath the exhaust. Turn the engine over. Let it run it for 60 seconds. Turn off the engine.