Losing Fuel Like Mad!

Discussion in 'Whizzer Motorized Bicycles' started by Hal the Elder, Apr 11, 2009.

  1. Hal the Elder

    Hal the Elder Member

    Just before taking Oscar out for a run, my wife yelled "STOP...SHUT IT OFF...GAS IS SQUIRTING OUT", so I looked, and fuel was coming out from the carb overflow tube like a running faucet! I had to shut it off at the tank!

    It looks like the float bowl valve is not stopping the flow from the tank. Can I remove the float bowl with the carb on the bike?

    Thanks, and HAPPY EASTER!
    Last edited: Apr 11, 2009

  2. RdKryton

    RdKryton Active Member

    Hal tap the bowl with a plastic screwdriver handle. That should shake the float loose. They stick once in a while at least mine does.

    Last edited: Apr 11, 2009
  3. KilroyCD

    KilroyCD Active Member

    Hal, that happened to mine before, and RdKryton is right, just tap it and it'll shake the float loose. Just don't use a ball-peen hammer like I did...

    ...hey Quenton, will JB Weld work on a carburetor?
    Last edited: Apr 11, 2009
  4. Hal the Elder

    Hal the Elder Member


    Tappin' on the bowl did the trick!

    I must have hit a pothole, with the vertical shock unseating the fuel supply valve.

    Thanks a lot!

  5. RdKryton

    RdKryton Active Member

    Glad that worked for you Hal.
    I don't know why the float will stick once in a while but it just does.

  6. Quenton Guenther

    Quenton Guenther Motored Bikes Sponsor

    Hi everyone,

    Sometimes a tiny dirt or loose particle finds it way into the float shut off valve and jams it open. This is often caused by loose paint chips from around the gas cap area on the tank. Many times I have cleaned a surprizing amount of particles from the float bowl.

    And for future reference, Hal, don't even think or try removing the float bowl without removing the carburetor. I assure you it will only take a couple of minuites to upset you while trying to re-install the float bown and not have it leak. The reason is because of a small round rubber gasket between the float bowl and the carburetor. When a single drop of gas hits the gasket it will expand to at least 400 times the normal size, just joking, however it won't easily fit back into the groove untill it shrinks back to size [use a hair dryer or lay it in the hot sunlight and wait for it to re-size].

    Any way just don't try to do it without removing the carburetor. If you ever do remove the float bowl you should check the float level. The float level on the 22 MM carburetor is 22 MM.

    Have fun,
  7. Hal the Elder

    Hal the Elder Member


    I've had the carb completely disassembled before, (in addition to changing the clip on the needle three times), and I remember that gasket!

    Oscar and I appreciate the help and advice from all of you!

  8. go-rebels

    go-rebels Member

    Hey guys, just a question on the design of that "overflow" valve...

    My Whizzer is down again as the carb now continually leaks out the bottom 'port'. I've removed the brass, tapered screw, blew out the opening with Gumout but the gas just flows freely from the bottom of the carb.

    Is this overflow from the float or just a bad seal from the brass screw to the body of the aluminum carb?

    Do i need to remove the carb and give it a good cleaning or get another carb?
  9. RdKryton

    RdKryton Active Member

    If I remember correctly that is an overflow as well as a drain for the bowl. It sounds like your float valve is very stuck or the float may even have a hole in it and be full of fuel. Did you tap the bowl firmly? Sounds like it is time to take the carb off and check everything out. Good luck.