Have to peddle real fast to get it to fire....

Discussion in 'Motorized Bicycle General Discussion' started by borntofli, Jan 8, 2013.

  1. borntofli

    borntofli Member

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    Ht 66, 39 t sprocket..7 speed bike...

    For some reason I starting yesterday I now have to peddle in 3rd gear hard to get it to fire... Usually a brisk first gear and im off.....

    I get no fire at slow starting speeds...

    Sounds like a magneto ????? If cdi problem usually they work or dont....???

    Any help??
     
  2. Venice Motor Bikes

    Venice Motor Bikes Custom Builder / Dealer/Los Angeles

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    If it starts, the electronics are good. ;)
    Raise the choke lever up about 3/4 of the way to make it start easy & fast.
     
  3. borntofli

    borntofli Member

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    Choke soesnt seem to have any effect.... I have 1500 miles on this engine in warm and colder conditions and havent had this prob before..... Its been wet here lately, could moisture be effecting my plug wire screw in on the cdi??

    I changed plug wires and no difference...

    I'll fart around w/ it tomorrow and see what I come up with......
     
  4. GearNut

    GearNut Active Member

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    Try a new spark plug. If that is not easy ATM try closing the spark plug gap just a teeny bit.
     
  5. BigBlue

    BigBlue New Member

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    Did you ride it in the rain?

    Chris
    AKA: BigBlue
     
  6. GearNut

    GearNut Active Member

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    Good point, BigBlue!

    borntofli, remove the mag cover and be very sure that there is no water inside there.
    Most engines won't tolerate even a bit of moisture in there. They are cheap and finicky.
    It is highly recommended that folks seal up the mag to prevent any water from getting in there. You need to use RTV silicone to seal where the wires exit the front of the engine, both where the wires exit the wire sheath and where the retaining nut fits into the case.
    I recommend using Hylomar to seal the cover gasket.
     
  7. BigBlue

    BigBlue New Member

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  8. borntofli

    borntofli Member

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    Turned out to be a simple problem...... New bp6hs plug and off to the races.... Fires right up at slow speeds.....

    Did check out the mag and it was dry and clean.........

    Thanks for all your input......
     
  9. 2door

    2door Moderator
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    Congratulations. Enjoy your bike.
    What did you set the plug gap at? Try .020 to .024.

    Tom
     

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