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guys a buddy of mine threw some new exhaust manifolds on his boat last season. the manifolds had only one bolt per port(there are 2 holes on the head side and all my boats have had 2 bolts per port) holding it to the head which i thought was weird but the original manifolds are the same way. so anyway he winterized the boat in october and took it out this summer and and noticed water in the oil. he yanked of the intake manifold and put it back on, improperly i believe.
so anyway i pulled the heads off last night expecting to find a blown gasket and it was not blown but i did find water in 4 cylinder heads(the 2 rear cylinder heads on the port and starbd sides). i dont suspect a cracked block, everything looks just fine. im at a loss. possibly a hole in the intake manifold? could the exhaust manifolds be the issue?
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