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Old 08-23-2024, 12:32 PM
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Default 66LeMans Carter AFB

What am I looking at with the middle screw on the front of this AFB? The ones on either side are the idle adjustment screws but unsure what the middle screw is.
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Old 08-23-2024, 02:17 PM
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It is used to set the idle speed, adjusting bypass air.

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Old 08-23-2024, 04:30 PM
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Thank you.

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Old 08-24-2024, 12:28 PM
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Where is the best place to get the vacuum for reading on my vacuum gauge?
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Old 08-24-2024, 03:04 PM
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I believe you could hook into this for full vacuum Click image for larger version

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Or you could hook into that hose on the rear to the brake booster.

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Old 08-24-2024, 03:09 PM
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It would have to be the first mentioned. I have manual brakes.

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Old 08-24-2024, 03:14 PM
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Well, there should be a large port on the carb rear that is probably capped. Near the base.

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Old 08-24-2024, 03:42 PM
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I would "T" into the distributor vacuum advance hose.

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