Motorized bike seems to have more power at very slight choke

Discussion in 'Motorized Bicycle General Discussion' started by arguevera, Jul 21, 2017.

  1. arguevera

    arguevera New Member

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    Hi I have a default ebay 2 stroke 80cc kit with the stock NT carb.

    Currently I have the pin in the carb set to the leanest setting (towards the top) as all the other settings seem to give some form of 4 stroking.

    When I start the bike I choke it for around 5 seconds then immediately switch to completely open.

    The bike idles perfectly fine when cold or when warm so I don't suspect any air leaks.

    However I have noticed something peculiar:
    If I have the choke ever so slightly closed, I have a significant power boost both in acceleration and in climbing hills. It doesn't seem to 4 stroke and idles perfectly fine.

    So my two questions are as follows:
    Is it okay to run the bike at this choke setting like this?
    Is there any adjustments to the carb that I am missing out on?
     
  2. Chaz

    Chaz Active Member

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    If your plug colour is okay then you are good. Maybe try dropping the needle clip a notch at a time to see how it goes.
     
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  3. crassius

    crassius Well-Known Member

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    I'd try upping the float level a bit and see what happens if the motor has a couple hundred miles on it (I never do fine tuning until rings are well seated).
     
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  4. arguevera

    arguevera New Member

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    I will try both of those, thanks guys!
     
  5. wheelbender6

    wheelbender6 Active Member

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    Never tried that. Easier than changing jets.
     

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