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Home >> Chevrolet >> 1981 >> Forward Control 4.8L Eng VIN T, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> ROCHESTER 1ME Single Barrel >> Adjustment >> Choke Unloader

Choke Unloader

  1. Install choke coil in housing and index properly.
    NOTE: Install choke is warm, cool down to point where choke valve will close fully.
  2. Hold throttle valve wide open. Measure specified clearance between lower edge of choke valve and air horn wall.
  3. Measurement can be made using a specified drill or pin gauge. If adjustment is required, bend choke unloader tang to achieve proper clearance.
    Fig 1: Adjusting Choke Unloader
    G09337039Courtesy of GENERAL MOTORS COMPANY