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  1. J

    1985 Sea Ray Seville 21' Cuddy-Fix or Sell?

    Hi. I posted on here regarding my Sea Ray Seville. My brother and I just bought it, and unfortunately were screwed...bigtime. We did not check its compression beforehand. Currently, it has a Mercruiser 3.7L 170 HP engine. The compression test came back as: 1-175 2-175 3-75 4-100 I know the...
  2. J

    Need help with 1985 Mercruiser 3.7L 170 HP Compression Issue

    Hi All- Just bought this 1985 Sea Ray Seville 21' Cuddy with 170 HP Mercruiser I/O. Owner had not run the boat in over 5 years, so I started with the basics. I put in new plugs, wires, rotor, engine would still not fire. During this time, I also put Mystery Oil in all 4 spark plug holes and...
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