1. Home
  2. Carburetor Parts
  3. by Part Type
  4. Idle Mixture Screws
  5. Holley Carburetor Idle Mixture Screw 16-45
Holley  Carburetor Idle Mixture Screw 16-45
Holley Carburetor Idle Mixture Screw 16-45

Holley Carburetor Idle Mixture Screw 16-45

5 Review(s)
Your Price: $6.95
10-32 x .998"
Part Number: 16-45
Availability: In Stock

Choose Options

*
Write a Review
Holley 1904, 1920 1 barrel carburetor idle mixture screw. Includes a new spring. There may be more than 1 screw for these carburetor. Please compare measurements (overall length) and most of all the taper of the screw.

SPECS:
  • Thread = 10-32
  • Overall length = .998"
  • Shaft = .9035"

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 Idle Mixture Screw - 1/4
In Stock
1/4-36 x 1.297
Part Number 16-107
(2)
$6.95
Item In Cart Marvel Schebler Idle Mixture Screw - 16-23
In Stock
10-32 x 1.255"
Part Number 16-23
(1)
$4.95
Item In Cart Idle Adjusting Screw 1.17
In Stock
1.17" 10x32
Part Number 16-72
$8.95
Item In Cart Mikuni / Solex Carburetor Idle Mixture Screw 16-147
In Stock
(LATE MODEL) 1980-89 Chrysler Import, Mitsubishi, Hyundai Thread = M0.25 x 0.5 Overall length = 1.09 Shaft = 1.0075"
Part Number 16-147
$8.95

Recently Viewed Items

Can't find what you need? Contact Us
TOP