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Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 10621
Experience:  40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
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Late 80s carver 3467 two 454 GM /MercCruser. Ttrying to

Customer Question

late 80s carver 3467 two 454 GM /MercCruser. Ttrying to winterize, we found the coolant going into the center bilge in the salan. WE were pouring it into a hose connected to the right V drive upper plug with the sea cock closed. No coolant anywhere in the engine compartment. The hose from the v drive to the strainer is intact. Does something else share the coolant with the starboard engine. We usually fill a pail with coolant and the engine emptys the pail in a few seconds. This time on the starboard engine there was no suction and it just ran into the bilge through the hole in the rear where the bilge pump exhausts. The port engine winterized as usual
Submitted: 1 year ago.
Category: Boat
Expert:  Tan replied 1 year ago.

Hello. My name is Tan.

This may take more than one reply to solve your issue.

The hot water heater could be connected to the engine cooling system.

This is for the engine to heat the water in the hot water heater. That would be the only accessory that would be connected to the cooling system.

Now it is possible you have a broken hose or hose clamp between the engine and the vee drive. So inspect all your hoses for holes on the hose that runs to the water pump. This would explain why the pump wouldn't prime and suck the coolant.

The water heater connections will be on the front of the engine connected to the circulation pump and the t-stat housing if connected correctly.

I suspect since the coolant is ending up in the salon bilge the leak is around the vee drive as you don't have coolant in the bilge under the engine.

Does this make sense?

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