Carter AFB, 4-barrel and Edelbrock 1404 Idle Mixture Screw

AFB Edelbrock 1404 Idle Mixture Screw - 16-168

2 Review(s)

Your Price: $6.95

10x32 1.70" overall length

Part Number: 16-168

Availability: In Stock

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Spring (66-58)

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Idle mixture screw for the Edelbrock 1404 and AFB 9000 series.

SPECS:

Thread = 10-32
Overall length = 1.70"
Shaft = 1.4925"

Adjusting the Idle Mixture Screws

The idle mixture screws only affects idle. They simply control the amount of fuel and air mixture that is delivered at idle.

First run the screws in all the way until they seat, lightly. Too hard and you will damage the screw. Now back the screw out until the specified rpm is achieved. Turning the idle mixture screws clockwise (in) leans the idle mixture. Turning the idle mixture screws counter clockwise (out) richens the mixture.

Turn the mixture screws, alternating between the two in 1/4 turn at a time until the engine rpm starts to drop, then turn them back out 1/4 of a turn.

When adjusting your idle mixture screws doesn't seem to change the engine rpm much is an indication that there is something wrong and could be an indication of a needed rebuild.

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5.0

buyer

As usual all parts met expectations. Will be back as needs arise. Thankks Tom

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Reviewed by: Tom Ortel from Tipp City Ohio on 7/5/2022

AFB/Edelbrock mix screws

These look just like the originals, only cleaner!

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Reviewed by: Brian Flanigan from Denton on 4/14/2021

AFB Edelbrock 1404 Idle Mixture Screw - 16-168

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