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Rochester 2G, 2GC Idle Mixture Screw 16-130
Rochester 2G, 2GC Idle Mixture Screw 16-130

Rochester 2G, 2GC Idle Mixture Screw 16-130

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Your Price: $6.95
GM 1969-78 10-32 x 1.850"
Part Number: 16-130
Availability: In Stock

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Rochester 2G, 2GV idle mixture screw. Price is for one screw and you will need to order two. Price is for 1 screw + spring and min order is 2.

Fits: 1969-78 General Motors

  • Thread = 10-32
  • Overall length = 1.850"
  • Shaft = 1.6475"

Includes carburetor number: (note there are more, but we don't have them yet.)

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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