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  1. M

    1983 Johnson GT150 idles fine on muffs but bogs to die in water

    Thanks for answering back. I appreciate it. I will get a compression gauge as soon as I can and get the boat to the house to check it (weather permitting). I will post the values as soon as I can. I would take it to a shop but the reputable ones around here won't work on anything this old and...
  2. M

    1983 Johnson GT150 idles fine on muffs but bogs to die in water

    I have this engine on a 97 Raycraft bass boat. Engine was running rough so i did tune up and then maintenance. Changed spark plugs and checked all wiring and connections. Rebuilt carbs, checked and cleaned fuel pumps and changed fuel lines. cables may have been turned off of where they were. I...
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