Better with idle screw completelt taken out?

Discussion in 'Motorized Bicycle General Discussion' started by toker_ace, Dec 3, 2009.

  1. toker_ace

    toker_ace Member

    Joined:
    Oct 15, 2008
    Messages:
    475
    Likes Received:
    1
    Why does both of my bikes run better with the idle screw on the carb completely removed? Anyone know?
     
  2. saetta

    saetta New Member

    Joined:
    Jul 29, 2008
    Messages:
    156
    Likes Received:
    0
    Over all run better or just idle better?
     
  3. BarelyAWake

    BarelyAWake New Member

    Joined:
    Jul 21, 2009
    Messages:
    7,209
    Likes Received:
    5
    I'd bet that yer runnin' on the rich side, takin' out the idle screw completely would cause a drastic air leak and result in a much leaner mix... *shrug* maybe yer air filters are too restrictive? These stock carbs really aren't the best... perhaps the same effect could be gained by carefully enlarging the intake passage in the carb itself allowing more air through it? I seem to remember a thread about that somewhere... mebbe...
     
    #3 BarelyAWake, Dec 3, 2009
    Last edited: Dec 3, 2009
  4. toker_ace

    toker_ace Member

    Joined:
    Oct 15, 2008
    Messages:
    475
    Likes Received:
    1
    over all much better! before I took the screw out my plug was black after I removed it my plug was a light gray. I'm running the opti 2 oil. Everyone says your suppose to run it 100:1 but if you buy it in the little packs it mixes up about 80:1 ( i think) the little packs are 1.8 ounces. 128 onces in a gallon / 1.8 ounces of oil = ?????????? maybe its too rich?


    I just found this searcking the web. its someone talking about opti-2 ....... "I've used it at 100:1 in old Q-35's, Zenoah 23/62 and Brison 2.4 mostly right from the start. Rightly, they take a bit longer to get truly run in, but I'm not in a race.

    Also note that the packaging can be a bit confusing. It says one package for one gallon or 5 litres of gasoline. The one pkge to 5 litres will give exactly 100:1 which is what the oil is designed to run at. Using it in one U.S. gallon gives a much higher concentration of oil.

    I guess we just might have the a conclusion here folks! LOL! Oh, toker here may be a little "richy"
     
    #4 toker_ace, Dec 3, 2009
    Last edited: Dec 3, 2009
  5. xlite

    xlite New Member

    Joined:
    Jun 18, 2009
    Messages:
    736
    Likes Received:
    0
    Might want to carry a spare piston and cylinder with you like I did when running with a gray plug. :eek:
     
  6. toker_ace

    toker_ace Member

    Joined:
    Oct 15, 2008
    Messages:
    475
    Likes Received:
    1
    The plug isn't gray its a light brown, but not oily. Is that ok or am I fix'in to blow my motor?
     
  7. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

    Joined:
    Jan 8, 2008
    Messages:
    11,529
    Likes Received:
    3
    I would fix the mixture problem....put the screw back, and move your C clip up one notch. Clean your air filter foam, and check the exhaust for restrictions.
     

Share This Page