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Carter AFB gurus #775341 08/16/10 08:35 PM 08/16/10 08:35 PM
Joined: Jun 2005 Posts: 326 Davenport, IA 7 70shaker OP enthusiast
70shaker OP enthusiast 7 Joined: Jun 2005 Posts: 326 Davenport, IA	My son just bought a 1960 Cadillac and it has a Carter AFB which I am rebuilding. This one has a large round screw with a spring that is in between the idle mixture screws. Does anyone know what this screw is and how to adjust it? Thanks Ex Hemi Racer 70 Challenger Hemi 4 speed clone

Re: Carter AFB gurus [Re: 70shaker] #775342 08/16/10 09:19 PM 08/16/10 09:19 PM
Joined: Jan 2003 Posts: 1,882 Walla Walla, WA H Hemi_Jack top fuel
Hemi_Jack top fuel H Joined: Jan 2003 Posts: 1,882 Walla Walla, WA	It is used to set the idle speed on the older AFB's. I turn mine in until it starts to stumble and then back off 1/2 a turn to get a baseline.

Re: Carter AFB gurus [Re: 70shaker] #775343 08/16/10 09:20 PM 08/16/10 09:20 PM
Joined: Mar 2005 Posts: 493 Arizona A az426john mopar
az426john mopar A Joined: Mar 2005 Posts: 493 Arizona	The screw you are refering to is called an idle bypass air screw. It is also used on 1967 Hemi cars. It is used to set idle speed once the choke is off and you have adjusted the idle mixture. To set the idle, the instructions are on page 14-65 of the 1967 Service manual. I am sure other more knowledgeable folks will jump in also.

Re: Carter AFB gurus [Re: az426john] #775344 08/17/10 02:23 PM 08/17/10 02:23 PM
Joined: Jun 2005 Posts: 326 Davenport, IA 7 70shaker OP enthusiast
70shaker OP enthusiast 7 Joined: Jun 2005 Posts: 326 Davenport, IA	I have numerous Service manuals but the oldest is 1970 which does not show this. Can you list the procedure or copy the page? Thanks very much Ex Hemi Racer 70 Challenger Hemi 4 speed clone

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