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  1. J

    Johnson 140HP bogs won't plane over

    I have a '79 Johnson 140HP SeaHorse V4 Model #44STL79R that seems to idle OK but when I take it to the water and try to take off it just bogs down and will never plane over. It seems to free rev in neutral fine with the warm up lever. I bought the boat not running but was told it ran fine summer...
  2. J

    '79 Johnson 140 spark plug

    My other thread must have died for lack of information by me. Anyway, I bought new plugs this afternoon (Champion QL77JC4) and will take carbs off again to clean. The Napa guy had charts for the Johnson motors and this Champion plug was not listed. Every thread that I see with this engine...
  3. J

    140HP SEAHORSE SURGING

    Hey guys I did a search and couldn't pin down my problem. Boat was sitting all winter but docked with no problems. She didn't fire right up so I removed the carbs and cleaned them well. No problem. It starts perfect now but has a definite surge at all rpms, obviously more noticeable at lower...
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