1986 galaxy 20ft 3.0lt 4cyd were getting water in the oil we drained oil from pan keptplug out.hooked water hose to termastat hose water came out oildrian plug hooked hose too exhust riserer water still leaked out oil drian hole
CRACKED BLOCK INTERNALLY. No doubt. Pull the engine and replace the block at least. Compression has nothing to do with cracked water passages inside the engine.
