50 horse 2 stroke 2006

Discussion in 'Outboard Maintenance' started by AnkleDeepFishin, Aug 15, 2010.

  1. AnkleDeepFishin

    AnkleDeepFishin I Love microskiff.com!

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    when running 75% or so throttle the motor runs good but when pushed pass the motor starts to miss fire an start runnin funny i was think spark plug wires would that be a symptom from bad spark plugs
     
  2. DuckNut

    DuckNut Brandon, FL

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    Look down in the list for the post from TomFL titled OK, I'm stumped and you may get some ideas.
     

  3. firecat1981

    firecat1981 BBA Counselor

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    Probably not a spark plug issue if it was it would usually run ruff through out a wide range of RMPs. Might be a carb issue, when was the last time they were cleaned?
     
  4. aflatsnut

    aflatsnut I Love microskiff.com!

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    You might also be over reving the engine and rev limiter is kicking in. What RPM are you at?
     
  5. firecat1981

    firecat1981 BBA Counselor

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    Wait, is this motor new to you? or have you had it, been running it for a long time.
     
  6. anytide

    anytide Administrator Staff Member

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    check timing advance , vacuum or computer driven ??  -could cause to break up ..   as earlier rev-limiter ??

    -mis fire, run funny  -  fuel filter @ wot = run funny ?
                                 mis fire @ wot =  timing ?
                                                       -anytide