FixVault

Choke Unloader

NOTE: Choke coil lever and choke rod (fast idle cam) adjustments must be correct before performing this adjustment.
  1. Install rubber band to vacuum break lever of intermediate choke shaft. Open throttle, allowing choke valve to close. Install Angle Gauge (J-26701-A) on choke valve. See Fig 1 .
  2. Adjust angle gauge to specification. See CARBURETOR ADJUSTMENT SPECIFICATIONS table. Hold secondary lock-out lever away from pin. See Fig 1 .
  3. Hold throttle lever in wide open position. Note bubble on angle gauge. Adjustment is correct when angle gauge bubble is centered. Using Linkage Adjuster (J-9789-111), adjust fast idle lever to center bubble.
Fig 1: Adjusting Choke Unloader
G54295Courtesy of GENERAL MOTORS CORP.