engine issues!

Discussion in 'Motorized Bicycle General Discussion' started by Agarm, Sep 2, 2011.

  1. Agarm

    Agarm New Member

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    My GT5 will idle great but as soon as i try to give it a fist full it cuts out. I drained the fuel and replaced it, changed the fuel filter, removed the carb and everything looks okay, adjusted the idle and air screws, and I put on an aftermarket air filter. Any suggestions would be great!
     
  2. Hacksawdecap

    Hacksawdecap New Member

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    Do you peddle alittle bit to help the engine out? if not It will stall.
     
  3. rustycase

    rustycase Gutter Rider

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    could be carby needle or jet probs... could be a funky plug wire???
    which plug are you running?

    ...how much time do you have on this motor?

    Good luck
    rc
     
  4. killercanuck

    killercanuck New Member

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    Depending on how far you get with WOT, it could be your tank vent, or the petcock's sucky flow. When you take'r out next, and it starts to do die, loosen off your tank cap. If it all of a sudden runs awesomely, you have a vent problem.

    If the vent didn't solve it, your petcock might be the weak link. Either upgrade, or, grab a shut-off valve for $3 to put inline after the tank petcock. Take an 11/32'ish bit and just drill right through the whole stock petcock. (take it off the tank, obviously). Their just cast crap anyway.

    gl.
     
  5. GearNut

    GearNut Active Member

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    If you whack it wide open from idle it will stumble and may die. It is the nature of the beast. These carburetors have no accelerator pump or any kind of device to accommodate very rapid throttle position change, especially when operating at slow engine speeds.
     
  6. Agarm

    Agarm New Member

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    Its clearly a fuel problem. I've been able to get it to run wide open but not under a load. I hear there is a clip i can adjust on the main jet but did not see one. Does anyone know where the clip is located?
     
  7. McCuiball

    McCuiball New Member

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    It's on the throttle cable inside the carb, also known as the pacman clip. I have mine set to the second notch from the top. I wouldn't think that is your issue though. Sounds more like a fuel filter/petcock issue.
     

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