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    1980/90 mercruiser 3.0 140 hp /water in oil/ explosion sound💥

    I opened the valve cover all seems to be good but one spring is lower than all other , i tapped on it but didn't move up , what should i do next ? Thx
  2. S

    1980/90 mercruiser 3.0 140 hp /water in oil/ explosion sound💥

    Thx i will try to open the head this weekend and see as you said
  3. S

    1980/90 mercruiser 3.0 140 hp /water in oil/ explosion sound💥

    Hi everybody, i bought a projet boat with a mercruier 3.0 L 140hp who didn't run for few years ,what i did : -Emptied oil and was full of water but not milky, oil and water were separated from each other - put new oil - rebuilt the Mecanical gas pump and changed all filters - compression...
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