motor wont start

Discussion in '2-Stroke Engines' started by rowenj, Oct 8, 2008.

  1. rowenj

    rowenj New Member

    It's been over a week and the motor wont start even with a B6HS spark plug. Looked into the sparkplug hole and saw no gas, rolled the bike forward with the clutch out, to turn the engine over & see if it pukes gas out of the sparkplug hole but nothings coming out. Took carb out to see if there's gas coming out of the pipe but nothing at all.:-x
     

  2. stude13

    stude13 Active Member

    po a tad o gas in the hole and try again.
     
  3. rowenj

    rowenj New Member

    :confused:what?
     
    Last edited: Oct 8, 2008
  4. mikaleno

    mikaleno Member

    Take off your float bowl carefully, should be full of gas. Play with your idle screw, turn it in, then turn it out 2 1/2 turns.
     
  5. MotorMac

    MotorMac Member

    Gas

    Disconnect the fuel line where it attaches to the carborator,make sure the petcock valve under the gas tank is open. gas should pour out the end of the fuel line. If no gas comes out then you have a clogged screen inside the petcock,if so remove it,and replace with an inline filter,or you have a defective petcock.
    If gas does come out then the problem is in the carborator,most likley the needle valve is stuck in the seat not allowing gas to fill the fuel bowl.You will have to remove the fuel bowl and you will see a metal prong holding up a needle valve, that maybe stuck,, there is a thread here somewhere that shows you how to troubleshoot the carb. Try a search under carb problems. Mods feel free to move this to appropiate thread.
     
    Last edited: Oct 8, 2008
  6. rowenj

    rowenj New Member

    so the fuel in the bowl fills all the way up and exits to the center hole and goes through the pipe that connects to the motor, right? my carb aint doing that.
     
  7. MotorMac

    MotorMac Member

    No its not like that, there should be a screw on the outside bottom of the fuel bowl, open it up and see if any gas pours out,if nothing comes out then its a stuck needle valve, did you see if gas came out of the fuel line when you disconnected it from the carb as I said in the above post?
    If no gas comes out of that bottom screw then the next step is to take the air cleaner off get an old turkey baster or something and squirt some gas into the intake, if it starts up then dies the problem is in the carb. You may need to tie up the rear of the bike or use a stand so you can pedal it without the bike moving.
     
    Last edited: Oct 8, 2008
  8. rowenj

    rowenj New Member

    I did squirt some fuel into the intake using a turkey baster it starts up fine then dies in 4- 5 min.

    does the fuel suppose to rise up the center hole of the carb? sorry there is no screw on the bottom of the fuel bowl.
     

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    Last edited: Oct 8, 2008
  9. graucho

    graucho Active Member

    rowenj, respond to the comments that people give you. MotorMac above gave you some great
    tips. You have to try them, then respond to let us all know worked or not? Then we can scratch
    that off the list and try something different. :cool:
     
  10. MotorMac

    MotorMac Member

    Thanks for letting Rowanj know this Groucho,,,Rowanj what we are doing here is called process of elimination, this means going step by step to eliminate the things that could be causing this problem, you do need to follow them..what you need to do now is go back to step one and see if gas is flowing into the carb.Take the fuel line off at the carb and turn on the petcock valve and let me know if gas comes out, then I can help you from there. Mac:???:
     
  11. Mountainman

    Mountainman Active Member

    yes - the old turkey baster

    sounds like -- you are getting some gas through the carb

    because with a squirt of gas from a turkey baster
    it wouldn't run 4-5 min

    -- - possible gas restriction somewhere

    ride that thing Mountainman
     
  12. rowenj

    rowenj New Member

    Thanks motormac. the screen filter was clog with s*** now its flowing freely but now the carb is leaky.
     
  13. MotorMac

    MotorMac Member

    Great!! that was the whole problem!! Ok now throw that little screen in the garbage and get a very small inline gas filter from the lawnmower shop or Walmart or Home Depot and put that on before you even think of starting the engine.Ok where is the gas leaking from? the air filter? the fuel bowl? the fuel line? look very closely and get back to me and we can go from there.. Mac:grin:
     
  14. rowenj

    rowenj New Member

    Its leaking out of the air intake and the fuel bowl, even though i didnt even disasemble it.

    Is the CNS Carburetor from spoookytoothcycles.com any good? im thinking of buying one.
     
    Last edited: Oct 9, 2008
  15. mikaleno

    mikaleno Member

    Mine was doing that too, the fork tailed shut off valve in the float bowl wasn't shutting off when it came in contact with the float. So I took my two fingers and bent them down just a little so it would make contact sooner. That stopped the overflowing problem.
     
    Last edited: Oct 9, 2008
  16. MotorMac

    MotorMac Member

    Thats an easy fix Rowenj, take off the fuel bowl, theres 2 screws holding it on, you will see a white plastic donut in the bowl thats the float,, ok look up into the bottom of the carb you will see a U shaped prong, just bend down the 2 ends of the prong (VERY GENTLY)!!! about 1/8 inch, now put the fuel bowl back on and see if it stops the leak. It should fire right up!! But get that inline filter in BEFORE you start it otherwise you will have even more problems!..you dont need a new carb this is good learning for you... Study this before you start doing anything Go here..http://www.motoredbikes.com/showthread.php?t=4854&highlight=carb+pics
     
  17. MotorMac

    MotorMac Member

  18. MotorMac

    MotorMac Member

    Away

    I.ll be away from the computer for 3 days as its the Canadian thanksgiving long weekend holiday. If anyone else can help Rowanj along with his carb problems I,m sure he will appreciate it.
     
  19. MotorMac

    MotorMac Member

    Well Rowanj, is it running now?
     
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