Only off throttle, it's 4 stoking?

Discussion in '2-Stroke Engines' started by geebt48cc, Feb 17, 2011.

  1. geebt48cc

    geebt48cc Member

    When not using throttle, it's 4 stoking during ride?

    The 66cc Skyhawk is doing great with only 50/miles. Thick 16:1 break in, but just trying to figure out why I'm 4 stroking when only off throttle? Everytime I give it throttle, it runs very well with good power. I've been plug chopping, and color is right where it should be at tan.

    Any ideas? PS: .....needle is on third from top do to putting free flow air filter on.
    Last edited: Feb 17, 2011

  2. wackey101

    wackey101 Member


    hey just play around put it higher blunt end leaner sharp end richer
  3. professor

    professor Active Member

    You might leave it alone for now. I remember a post here saying four stroking on light cruise is normal. That is how my Toro 2 stroke snowblower runs.
  4. Hammond Egger

    Hammond Egger Member

    Put about another 150 miles on it and change your ratio to 40:1, then start trying to tune it.