1. Home
  2. Carburetor Parts
  3. by Carb Types
  4. Holley
  5. 2140, 4000 4 Barrel Parts
  6. Holley 4000 Teapot Carburetor Idle Mixture Screws 16-2-1
Holley 4000 Teapot Carburetor Idle Mixture Screws 16-2-1
Holley 4000 Teapot Carburetor Idle Mixture Screws 16-2-1

Holley 4000 Teapot Carburetor Idle Mixture Screws 16-2-1

1 Review(s)
Your Price: $4.95
10-32 x 1.069"
Part Number: 16-2-1
Availability: In Stock

Choose Options

*
Write a Review
Holley 4000 teapot carburetor idle mixture screws. Price is for 1 screw and you will need a set of 2.
1.069" overall length

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.

Related Items

Item In Cart Holley 2140 4000 Secondary Diaphragm SD5000
Out of Stock
Part Number SD5000
(13)
$24.95
Item In Cart Dashpot Assembly - 85-900B
Out of Stock
Part Number 85-900B
(35)
$17.50
Item In Cart Aluminum Plug Assortment - A100
In Stock
Part Number A100
(25)
$24.95
Item In Cart Autolite, Holley, & Motorcraft Hi Performance Main Jet Custom Assortment
In Stock
1/4" thread Custom Assortment
Part Number 120-40A
(1)
$55.00

Recently Viewed Items

Can't find what you need? Contact Us
TOP