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  1. #1
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    wh(18) carb jet question

    From reading I gather the idle jet controls fuel flow through the whole rpm range.
    If the idle jet was increased(to lean idle) would this cause the whole system to lean?
    ei: would a 52 idle jet and a 72 main be leaner set up then a 46 ij and 72 mj?
    If that is the case would leaning out the idle mean I would want to richen the mains?
    ei If I went from 46 idle to a 52 would I want to go from a 72 main to 78 for about the same total amount of fuel?
    Last edited by coffeeguy; 04-22-2021 at 08:03 AM. Reason: spelling

  2. #2
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    WH series carbs idle jets control "ONLY" idle circuit.. as soon as you you go off idle they no longer mater.............

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