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Thread: carb question

  1. #1

    carb question

    Ijust put a 4500 on my 540 chevy i have to turn the idle screw in about 5-7 turns to make it run right i put it on right out of the box i know it needs alot of tuning but i cant get it close enough to stay running. i have no vacume leaks and at wopt it runs great great respons i have floats set at half the window any help would be great thanks

  2. #2
    Senior Member DYNO TECH
    Join Date
    Aug 2007
    Location
    Colebrook Connecticut
    Posts
    425
    fuel level should just dribble out of the holes.
    1/2 up the windows is too much.

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    I always set them half

    not dripping over when at idle is it ?

    Alky or gas ?


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