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    1984 30 hp johnson compression questions

    So I just got this motor and a 14ft cobia. Ran it for a while and began fouling the cylinder. Replaced the coil and new plugs but when I was putting in the new top plug I noticed debris in the cylinder. I did a compression test and 85 top 95 bottom. How bad is this?i also did the test with the...
  2. S

    1984 johnson 30 hp dead cylinder issue

    First post and already looking for help;). I just bought a 14 ft cobia with a 1984 johnson 30. Brought it home cleaned it up, new plugs, and have ran it up and down the river a couple of times with no real issues. The guy i got the boat from didn't know much about the motor but said it ran fine...
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