Exhaust Minimum 2-stroke exhaust smoke trail

Discussion in '2-Stroke Engines' started by mifletz, Nov 12, 2009.

  1. mifletz

    mifletz Member

    Which of the 2-stroke engines is the least offending at leaving an exhaust smoke trail, if one doesn't want to catch the eye of "The Filth" (UK term = "Pigs" in the USA!).

  2. Ghost0

    Ghost0 Guest

    The amount of smoke produced by a 2 stroke is most dependent on the fuel to oil ratio and the type of oil. If you run 20:1 you will product more smoke than at 40:1. A low grade 2 stroke oil will tend to produce more smoke than a high quality synthetic 2 stroke oil.
  3. loquin

    loquin Active Member

    Mitsubishi TLE33/43s run a 50:1 mix & burn very cleanly. Even without catalytic converters, they're certified to meet CARB emission standards.
  4. motorpsycho

    motorpsycho Active Member

    Last edited: Nov 14, 2009
  5. Al.Fisherman

    Al.Fisherman Active Member

  6. DJChrisp

    DJChrisp New Member

    I am running a 32:1 mix of Caster and Marvel Mystery Oil in my 68.5cc HT with a catalytic muffler and have absolutely no visible smoke unless I sit at idle for more than 2 min or more but as soon as I lay into the throttle again it's gone.