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Old 09-08-2015, 09:09 AM   #1
townsedan29
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Default poor idle

I hope this might help others. I have been fighting this carb issue since the resto of my ccpu. just could not get it to idle well. I had even rebuilt another complete carb but downfall was I used the same throttle shaft. the shaft I used was all steel and had a milled recess where the butterfly sat not a slot like the brass ones which in turn blocked the idle hole in the throat off. changed to slotted style shaft and idles perfectly. I dont know if the all seel shaft is supposed to have a different butterfly or its just an oddball. hope this may save somone some grief
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Old 09-08-2015, 09:41 AM   #2
BILL WILLIAMSON
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Default Re: poor idle

Could it have possibly been a Model B shaft?
Bill W.
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Old 09-08-2015, 11:37 AM   #3
townsedan29
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Default Re: poor idle

I dont think so the B carbs I have are made differently they still allow the butterfly to be in center of shaft the one I have offsets the butterfly. I would like to thank the Ford Barn for its information and Dave from Jordon for his advise
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Old 09-11-2015, 09:14 AM   #4
townsedan29
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Default Re: poor idle

I had a fellow club member look at throttle shaft he said its a tillitson shaft . I dont know where I got it as I dont have any of those carbs
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