Cartoon of How CV Carburator Meters Air/Fuel Throughout RPM
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Thread: Cartoon of How CV Carburator Meters Air/Fuel Throughout RPM

  1. #1
    Senior Member Fred's Avatar
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    Cartoon of How CV Carburator Meters Air/Fuel Throughout RPM

    They say a picture is worth a thousand words. A good cartoon can be even better

    As you can see various circuits contribute additional fuel with increasing rpm to the overall supply to the engine. I find it helpful to review this occasionally.
    Last edited by Fred; 06-08-2015 at 01:35 AM.
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    Senior Member jbfla's Avatar
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    Hi Fred,

    I thought cartoons were supposed to be funny!

    ...and where's the "coaster" circuit?

    jb
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    Senior Member Leisure Time Larry's Avatar
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    This is a good one. I've posted it many times when peeps are having carb trouble and trying to learn. Worth a sticky!
    littletommy and Fred like this.
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    Senior Member Welder's Avatar
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    Is that accurate? I thought vacuum would cause the pilot jet to feed fuel at ALL throttle positions (?).

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    Senior Member jbfla's Avatar
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    Quote Originally Posted by Welder View Post
    Is that accurate? I thought vacuum would cause the pilot jet to feed fuel at ALL throttle positions (?).
    You thought right. It does, just not as much.

    jb
    Last edited by jbfla; 06-08-2015 at 02:54 PM.
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  7. #6
    Senior Member Fred's Avatar
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    I can't thank Irppcer enough for originally posting this video long ago. While not perhaps perfect it does show the interplay happening. Helps when trying to explain that indeed the pilot jet and pilot mixture screw contribute at higher rpms for those who occasionally insist on arguing the contrary.
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