Lock-Out Lever Opening Clearance

1987 Chevrolet Step Van P30, 7.4 W, Automatic, 400/M40SECTION Lock-Out Lever Opening Clearance

Push down on fast idle cam to completely open choke valve. Measure opening clearance between end of pin and toe of lock-out lever. See Fig 1. File end of lock-out pin to obtain clearance of .015" (.38 mm). Make sure all burrs are removed.

Fig 1: Secondary Throttle Valve Lock-Out Adjustments
G8700Courtesy of GENERAL MOTORS CORP.
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:

  • 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.