Join Date: Aug 2006
Location: Arlington, VA
Thanked 14 Times in 12 Posts
Rep Power: 12
Not sure whether or not you removed the fresh water circulating pump or not. If so, be advised that on the 4-108 there's a thin steel plate which sits between the pump mounting face and the engine. This plate has a gasket on each side of it, and they are NOT IDENTICAL. An island mechanic once replaced my circulating pump and used identical gaskets, thereby blocking an important port and causing overheating.
I wound up flying a good friend/expert mechanic down from the states, who quickly identified this and several other problems causing the overheating.