not getting fuel in chamber

Discussion in 'Motorized Bicycle Trouble Shooting' started by Mjlive67, May 18, 2017.

  1. Mjlive67

    Mjlive67 New Member

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    I cant seem to get fuel into the chamber. my carburetor seems to be operating correctly float not jammed. I have compression and spark. but I pedal and pedal releasing the clutch. I feel it bog down. I have tried the choke in every position possible. Took off cap and cylinder is bone dry. I don't know what to try next. :-||
     
  2. crassius

    crassius Well-Known Member

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    I'd probably put a few drops of fuel in thru spark plug hole to see if it pops - I'd also check compression with a gauge in case a seal is blown.
     
  3. MotorBicycleRacing

    MotorBicycleRacing Active Member

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    NT carb? clean the jet hole thing me bob.....
     
  4. Mjlive67

    Mjlive67 New Member

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    I did what you said and it worked for about 5 seconds, but died. I tried this again and didn't have any luck. I could still fell the strain of the engine pedaling making it hard to pedal. In my head i feel like its not sucking in fuel from the carb. not sure how to check. I have taken part the carb and it looks clean and the float seems to move around fine. The few seconds it ran gave me a lot of hope, I really appreciate your help.
     
  5. Tony01

    Tony01 Member

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    When you take the bowl off with gas on does the fuel flow freely? Is there gas in the bowl? Take out the jet and see if it is clogged.
     
  6. mike carter 2

    mike carter 2 Member

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    shut off the gas at the tank,remove the carb and drain the fuel into something.turn it upside down on your bench ,table..ect.remove the 2 philips screws from the fuel bowl and gently remove the bowl.now you can see the float.look closely at the pivot point and you will see a pin that holds the float in place.gently pull the pin out with needle nose pliers,now you can GENTLY lift off the float.when you do this you will notice the needle valve hanging down from a small tang on the float.do not bend that tang .now use your mouth to blow through the fuel inlet and you should feel air come through.look down the hole that the needle valve came out of and check for any dirt.no dirt is good.dirt bad.if you have it use compressed air to blow through the fuel inlet agian and only then blow out the hole where the needle valve goes.reassemble is the opposit of tear down.be gentle, dont force anything.once you have it together,hold it rite side up and use your mouth to blow through the fuel inlet,it should be easy and you can hear it.now turn the carb over and blow again. you should not be able to.now reinstall your carb .if it was a stuck or dirty needle valve you just fixed it.
     
    #6 mike carter 2, May 31, 2017
    Last edited: May 31, 2017
  7. mike carter 2

    mike carter 2 Member

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    one more thought,are you getting fuel through the fuel line ? pull the line off carb to check.open the fuel valve if you dont see gas
     
  8. CRP

    CRP Member

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    Do what Mike said.

    You need to follow the fuel and see what the problem is. Fuel line is easy to check, carb bowl then jet. Not much else to look at.
     
  9. mike carter 2

    mike carter 2 Member

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    did you get it fixed.? if so what was it
     

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