My boat is getting water in the oil its a 1987 4 winns with 3.7 liter with closed cooling system?

could be several things, block, head, head gasket. i hope you havent run it much. get it to a shop.My boat is getting water in the oil its a 1987 4 winns with 3.7 liter with closed cooling system?
flapper check valve on exhaust is either stuck open or missing,or oil cooler is leakingMy boat is getting water in the oil its a 1987 4 winns with 3.7 liter with closed cooling system?
you have a bad seal there is 2 of them behind the impeller thats contained in the same cover for the timeing chain
Sounds like blown head gasket.
Head gasket or cracked head.

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