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Discussion in 'Mechanic and Repair' started by No Clumps, Nov 26, 2012.

  1. No Clumps

    No Clumps LawnSite Member
    Posts: 1

    Why does my 31hp Kawi backfire when I start it and I mean a big backfire? Never did before this summer.
  2. Monroe74

    Monroe74 LawnSite Senior Member
    Posts: 322

    Fouled plugs maybe? Carb need adjusted?
    Just thoughts
  3. 44DCNF

    44DCNF LawnSite Bronze Member
    Posts: 1,460

    Check choke function, for leaky head gasket, and for loose plug or plug wire.

    A plugged carb circuit might cause some misfiring so maybe run some seafoam through if you don't find anything from the above to be the issue.

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