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    1983 merCruiser 3.0 4 cylinder.

  2. A

    1983 merCruiser 3.0 4 cylinder.

    Here is a video of what it’s doing
  3. A

    1983 merCruiser 3.0 4 cylinder.

    The temp was good oil pressure good it’s making kind of a hissing noise and that was the first thing I thought to do
  4. A

    1983 merCruiser 3.0 4 cylinder.

    I pulled all the plugs out then put the tester on the first cylinder then fired over 4 times the went down the line
  5. A

    1983 merCruiser 3.0 4 cylinder.

    I thought so but like I said it runs just fine no issues makes no sense
  6. A

    1983 merCruiser 3.0 4 cylinder.

    Have a weird noise coming from my 1983 merCruiser 3.0 4 cylinder kinda sounds like sucking air or something
  7. A

    1983 merCruiser 3.0 4 cylinder.

    I did a compression test and I found that I have 80 psi on three cylinders and 60 on the other the motor runs fine but want to know if the right or not
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