I have a 1989 four winns with a Volvo penta motor in it The motor has started skipping when it gets hot and i noticed water in the oil does anyone have any suggestions on what it could be?
Do a compression check. Then you will probably have to pull the head. My first guess (and only that without some diagnostic) is a head gasket or crack in the cyl/head/block. This could also cause the missing as the coolant may also be spraying into a cylinder and killing the plug. a 3.0 is a good lasting engine, but only with the required regular maintenance. Problems are head gasket, cracked head and/or cylinder wall.
