Fast Idle Adjustment (Bench Setting)

1982 Buick Regal Sport, Trans Mfr CD 350C/MX5SECTION Fast Idle Adjustment (Bench Setting)
NOTE: This is a preliminary adjustment only. It is required to ensure that other adjustments are made with fast idle speed approximately correct. Final Cold (Fast) Idle Speed adjustment must be made with carburetor installed and engine running. See appropriate article in TUNE-UP Section  .
  1. Place fast idle speed cam follower on high step of fast idle cam. Back off fast idle speed screw until screw does not contact cam follower.
  2. Turn fast idle screw in until it just touches lever. Turn screw in an additional 3 turns. See Fig 1.
    Fig 1: Fast Idle Bench Adjustment
    G09315752Courtesy of GENERAL MOTORS COMPANY
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.