Fast Idle Cam Position

1982 Mercury Capri L, 3.3L Eng VIN BSECTION Fast Idle Cam Position
  1. Position fast idle speed screw on second step of fast idle cam against shoulder of highest step. Hold choke valve toward closed position with light finger pressure. See Fig 1.
  2. Measure fast idle cam specified clearance between upper edge of choke valve and air horn wall. Measurement can be checked using a specified drill or pin gauge.
  3. To adjust, bend fast idle cam rod. On Ford Motor Co. models, rod is located between automatic choke housing. To adjust, bend rod at "U" shaped bend.
    Fig 1: Adjusting Fast Idle Cam Position (Chrysler Corp. Model Carburetor Shown)
    G09318091Courtesy of CHRYSLER GROUP, LLC
RENDER: 1.0x

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When to See a Mechanic

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

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