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Scooter starts and runs after warm for 3 min then dies

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  • Scooter starts and runs after warm for 3 min then dies

    I have a bladez xs 33cc scooter that my neighbor was going to throw away. When they gave it to me it didn't run, but after a carb cleaning and some ethor and many pulls it started and ran good for around 2 weeks. Around that time I was riding it and it died and wouldn't start back up. That day it was around 95 so I thought it just got sort of hot and shut down. I get it back to my garage and it won't start after many weeks of tinkering and a new carb it finally started. My problem is that it starts and runs with me after being warmed up, on it really good for about 3 minutes then all the sudden it starts bogging down and it dies. No matter how I try to tune the carburetor it won't start. After letting it rest for 30 min it will do the exact same thing. I have absolutely no clue why it is doing this it never is scolding hot and it runs fine for a while but it's all the sudden that it bogs down and acts like you flipped it onto choke all the sudden. Any imput on to what is happening or how to fix it would be amazing.

  • #2
    Sounds like fuel starvation? Have you checked the in tank filter. Not sure it your model has one tho.

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    • #3
      It does have a fuel filter but it is broken so it doesn't filter anything it just sits in the tank on the end of my fuel line. Could that be a cause of it acting like this?

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      • #4
        That could be caused by the cap not being vented properly. Uses 30 minutes worth of gas then can’t suck any more.

        Try running it with the cap loose enough that it can suck air(not create a vacuum in the tank).
        Lookin for a new goat...mine is wore the hell out!

        Originally posted by Dirtmonkey
        Slitz is taken. We'll let you be Clitz.

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        • #5
          It is vented because my gas tank has a hole where the fuel lines go into the tank.

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          • #6
            Make sure all of the bolts are tight on all of the connections to the motor. (i.e. cylinder bolts, carb-to-motor bolts, muffler bolts. Look at the gaskets and see if there is any air being sucked in. Had the same problem on my BF, and found an air leak on the insulator on the back of the carb. For some reason when the motor get warmed up, the air leak caused all sorts of issues. Took me weeks of tuning, and crying on the message boards to finally fix it. Good luck, let us all know what at you did to fix. This seems to be a reoccurring issue with older gas scooters and no one thing is fixing it.

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            • #7
              Thanks so much I will look into that right away.

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              • #8
                OK so I tightened the cylinder bolts and the bolts that hold the carburetor and muffler on and still have my problem. How would you check for leaks? It's weird to me because it starts fine which is usually the problem.

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                • #9
                  To find a leak, start it up and spray a little carb cleaner on the usual suspects. It’ll idle high when you spray the leak.
                  Lookin for a new goat...mine is wore the hell out!

                  Originally posted by Dirtmonkey
                  Slitz is taken. We'll let you be Clitz.

                  Comment


                  • #10
                    OK thanks for the tip. I will try it out and see what happens.

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                    • #11
                      Definitely sounds carb related.

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                      • #12
                        The thing is that I have bought 2 new carbs for it and it still doesn't run good. I just have no clue what is wrong but am going to check for leaks later today.

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                        • #13
                          Are the pulse holes lined up on the carb to manifold?
                          *******Pedding since '02********

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                          • #14
                            if the pulse hole is the hole that is not the intake hole but the other one that is on the piece that the carb is mounted to then I think it is lined up. If somebody could explain that it would be nice.

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                            • #15
                              Ok I found a vacuum leak in-between my carb mount and the cylinder head I am going to gasket seal it and see what happens.
                              ​​​​​​

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