Carb float failure!!!

Discussion in 'Motorized Bicycle General Discussion' started by mike373, Jun 18, 2008.

  1. mike373

    mike373 New Member

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    Only an hour or so on this engine now.... Drove it today after work... got about 3 blocks away, when the engine quit. I looked down, and fuel was pouring out of the air intake. I shut off the tank fuel valve and pedaled home. I suspected the carb float was stuck. Took off the carb bowl to find that the float was full of fuel!!!! Anyone else heard of a leaking float? Looks like I will just buy a new float. Hope this isn't a common thing.

    Mike
     
  2. misteright1_99

    misteright1_99 New Member

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    2nd one Ive heard of this week...
     
  3. Dave31

    Dave31 Moderator
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    Yes, someone here just had the same problem :confused: I wonder if we are going to see alot of faulty floats now :rolleyes:
     
  4. nitroscope8

    nitroscope8 New Member

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    Would be funny if the float was the only part made in usa.
     
  5. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    It isn't of course.

    Either seal this one up or get a new carb.....I hear there is a shortage of floats about now...hmmm...wonder why :confused: :p

    The carb is the item most defective on the China Girl Chengines.
     
  6. misteright1_99

    misteright1_99 New Member

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    Could be the ethanol in the gasoline nowadays. Gasoline containing ethanol, and contaminated with moisture is very unfriendly to plastic parts....Just a thought.....
     
  7. nitroscope8

    nitroscope8 New Member

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    Only issue with our carbs is that the metal ring the float pusheso n gets a little tweaked and lets some extra fuel in and it leaks a little. A simple removal and slight bending brings it right back.
     
  8. misteright1_99

    misteright1_99 New Member

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    Apparently not the ONLY issue....
     
  9. mike373

    mike373 New Member

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    The funny thing is that I cant seem to get the fuel out of the float. Cant find a visable crack anywhere... but a tiny amount of fuel seems to slowly seep out from the inside hole. I was thinking of drilling a tiny hole in it to suck out the fuel.... but what could I use to seal the float with?? I dont know any glue or material that would stand up to being submerged in gasoline.

    I was thinking that my float failed from vibration, causing a hairline crack in it for fuel to seep in.

    Mike
     
  10. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    There are fuel proof epoxies. And indeed some folks have drained the float with an extra tiny hole. The trick may be getting all the oily fuel off the float for the epoxy to bond.

    A new carb is $22, so don't kill yourself.
     
  11. misteright1_99

    misteright1_99 New Member

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    With only an hour on the engine. The parts are cheap but not that cheap I wouldnt think. More likely made wrong.
     
  12. sunkyman

    sunkyman New Member

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    ThatsDax has floats for our carbs for 7 bucks.
     
  13. Pablo

    Pablo Master Bike Builder & Forum Sponsor

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    I thought he was out of stock. But indeed it doesn't say so on his page - shoot him a message or email.
     
  14. mike373

    mike373 New Member

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    I was thinking of making a float out of cork material.. What does anyone think? At least it wont fill up with fuel.

    Mike
     
  15. Ghost0

    Ghost0 New Member

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    Cork? Not a good idea, it will get tore up from moving around and deposit bits of junk in your carb clogging your jet. If you can clean out your old one and find the hole you can use a soldering iron or equivalent to melt the hole closed.
     
  16. Dave31

    Dave31 Moderator
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    Yes, cork will not work.....They do have plastic welding kit's at Harbor frieght...but I think a new carb is even cheaper then that.
     
  17. Cycofast

    Cycofast New Member

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    It happened to me and I fabricated my own float out of cork. Total cost $1.
     

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