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    1987 3.0L water in oil

    I saw that and suspected that area.. but as I mentioned the compressions were 155, 135, 155, 155 and so no real evidence of blow by between those 2 cylinders.. (#2 and #3 would have to drop the same, and prob below 100 Lb).. and that wouldn't have anything to do with water in the oil anyway...
  2. Y

    1987 3.0L water in oil

    I'd like to believe the water in oil prob is 'just' the head gasket, but I'm seeing no evidence of blow thru between any of the passages in the head gasket, the head, or the block. (Although the head gasket is the 'crappy' metal one I've been warned about). Am I missing something? I poured some...
  3. Y

    1987 3.0L water in oil

    Need advice. Bought this Four Winns w/ 3.0 Merc I/O and evidence of water in oil. I'm a good engine mechanic but no experience in Marine engines. We've done extensive reading on this engine and there are no exterior cracks anywhere, in the 'well known' places. We replaced impeller in out-drive...
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