40 hp johnson flooding

Discussion in 'Outboard Maintenance' started by Wrh6489, Apr 15, 2012.

  1. Wrh6489

    Wrh6489 Always good

    My 40hp crunk right up ran great but we stop and tried to restart it we had a flooding problem. It seams like it might be when I use the choke.
    Mylil.dinghy954@gmail .com
  2. Brett

    Brett > PRO STAFF <

    What year is the outboard?

    If the carb has fixed jets, probably needs a carb rebuild.
    Replace the float when you do the repair.

    If she's an antique, needle valves may need to be adjusted.

  3. Frank_Sebastian

    Frank_Sebastian Well-Known Member

    If gas was running out of the carb it is likely the float in the bowl. Like Brett said it needs a carb rebuild/repair.

  4. Wrh6489

    Wrh6489 Always good

    A 1980. I took her back out today & long as I didnt use the choke she was good.
  5. Brett

    Brett > PRO STAFF <


    Looking at the parts diagram for an early 80's johnson 40 carb,
    I'd guess that the low speed needle needs adjusting. If open too much
    it'd be letting too much fuel past and acting as a choke all by itself.
    Makes for an easy starting outboard, running that rich,
    but is probably fouling your plugs very quickly.
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