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Thread: Bike Carburetor Setting

  1. #1
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    Default Bike Carburetor Setting

    Discussion is about missing problem at high rpm and i want to fix it myself.

    Today i tested a local bike "Ghani". It was missing at high rpm and idling was also very poor.
    First i tuned it to rich mixture and it started missing even at low rpms. Then i leaned the mixture and idling became smooth.
    As soon as i gave it full throttle, bike stalled at 60kmph and turned off. I started it by using "choke" and came back home.
    My assumption:-
    1) Air jet is not working. Because at lean mixture i tried to set idle speed but rpm didnt went up/down.
    2) Float position is low and bike starves at full throttle.

    Advance apologies if i wrote something silly/wrong because i am not an expert

    The best car safety device is a rear-view mirror with a cop in it.

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    clean and reset the carb settings all will be good.


    carb needs a thorough cleansing.

    Quote Originally Posted by waqar19 View Post
    Discussion is about missing problem at high rpm and i want to fix it myself.

    Today i tested a local bike "Ghani". It was missing at high rpm and idling was also very poor.
    First i tuned it to rich mixture and it started missing even at low rpms. Then i leaned the mixture and idling became smooth.
    As soon as i gave it full throttle, bike stalled at 60kmph and turned off. I started it by using "choke" and came back home.
    My assumption:-
    1) Air jet is not working. Because at lean mixture i tried to set idle speed but rpm didnt went up/down.
    2) Float position is low and bike starves at full throttle.

    Advance apologies if i wrote something silly/wrong because i am not an expert

  3. #3
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    Quote Originally Posted by asjdsm View Post
    clean and reset the carb settings all will be good.


    carb needs a thorough cleansing.
    Already cleaned it. Sprayed carb. cleaner through every hole.
    But one thing i didn't mentioned. At correct mixture when i give it full throttle it starts missing and after few seconds bike turns off and little amount of petrol comes out from float bowl drain. means "bike over ho rahi hai"
    So point is that at full throttle the fuel level in float bowl should drop and uncover the emulsion tubes. So that more air comes into the system.
    ^^How can i fix this??
    The best car safety device is a rear-view mirror with a cop in it.

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    The best car safety device is a rear-view mirror with a cop in it.

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    my bike also facing that problem. mechanic didnt get it. he also change a coil.now i will clean carb and then see.

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    hv u checked the choke function, is it working perfectly? some times it just get stuck ..


    Sent from Mars using Telegraph
    Rise from the ashes,.....

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    @asjdsm, bro plz reply to my pm.
    I Am the Feel
    I Am The Yamaha!

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    Default

    these two below could be the possible issues with carburetor
    Either your bike carb float lever is not correct and is disturbed
    and this really causes the issue of overflowing

    or also yeah check this what Scorpion said
    hv u checked the choke function, is it working perfectly? some times it just get stuck .


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    Quote Originally Posted by getscorpion View Post
    hv u checked the choke function, is it working perfectly? some times it just get stuck ..


    Sent from Mars using Telegraph
    Choke is working perfect bro
    The best car safety device is a rear-view mirror with a cop in it.

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    Quote Originally Posted by amjad635 View Post
    these two below could be the possible issues with carburetor
    Either your bike carb float lever is not correct and is disturbed
    and this really causes the issue of overflowing

    or also yeah check this what Scorpion said

    how can i adjust the float level
    The best car safety device is a rear-view mirror with a cop in it.

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    Default

    Brother settings may vary carb by carb In my pridor carburetor there is no adjustment mechanism for adjusting float height below i am sharing link of video from here you can have an very good idea how to adjust it but becareful as you can damage carburetor while adjusting it require soft hands in for adjustment https://www.youtube.com/watch?v=xBCzVg4kUN0

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    I have always wanted to learn to set carburetter but felt reluctant to do so. Is there any video or something which can teach me that?

    Bike is CG125 2009 model.
    Riders on the storm ... literally.

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    Quote Originally Posted by amjad635 View Post
    Brother settings may vary carb by carb In my pridor carburetor there is no adjustment mechanism for adjusting float height below i am sharing link of video from here you can have an very good idea how to adjust it but becareful as you can damage carburetor while adjusting it require soft hands in for adjustment https://www.youtube.com/watch?v=xBCzVg4kUN0
    ok. i did everything i could.
    now only two things are remaining to be checked.
    1- float needle working
    2- throttle needle position
    I will do it on saturday
    The best car safety device is a rear-view mirror with a cop in it.

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    need to lower the float level in float bowl

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    check the jet and cable because I found they often cause variable idle speed.

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    @asjdsm @amjad635
    Today morning i opened the carb.
    Throttle cable was working fine with little play in throttle.
    Then i checked the float needle. It was in rough condition and its tip had rubber coating which was removed.
    Bought another needle valve for 200 rupees. its costly man
    Now its working fine.
    The best car safety device is a rear-view mirror with a cop in it.

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    Bike Carburetor Setting -1297800
    The best car safety device is a rear-view mirror with a cop in it.

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