Won't Start

Discussion in 'Motorized Bicycle General Discussion' started by oldsurfer, Jun 25, 2010.

  1. oldsurfer

    oldsurfer New Member

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    i had my 66 cc bike all done and was running fine got it home and noticed the green ground wire was lose..secured it to the front motor mount bolt ....the damn thing will not fire up....there are only 3 wires to look at the black and blue...as i rember..these 2 come from the magneto and go to the cdi...then there is the ground wire and the kill switch wire...all appear good connections....is the ground wire not in a good place were i have it?..what is the problem....is seems no spark.....help!!!!!!laff
     
  2. GearNut

    GearNut Active Member

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    Start with the easy things. Disconnect the kill button and see if that fixes it.
     
  3. oldsurfer

    oldsurfer New Member

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    how do you disconnect the kill switch
     
  4. drhofferber

    drhofferber New Member

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    where is the white wire from mag...first disconnect the green wire you put on the frame.now see if it starts...
     
  5. GearNut

    GearNut Active Member

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    Disconnect both wires that lead to it, keep the mag to cdi wires connected though.
    Also make sure that the darned sparkplug cap is still attached to the spark plug wire if you are running the stock set up.
    The next cheapest thing is to replace the spark plug with a NGK B6HS or B7HS (gap to .025"), and if that don't work,install a quality spark plug wire. You can use a coil to distributor wire from a car, or any used known good wire that has a 90 degree boot on one end.
     
  6. oldsurfer

    oldsurfer New Member

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    got it running..sprayed dw40 in the carb and put the choke on....fired right up...question...the motor surges until it gets up to speed is this typical of 2strokes?
     
  7. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    It running lean more than likely. Check your plug.
     
  8. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    The NGK B7HS plug is a little too cold... Use a B5HS or B6HS! ;)
     

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