Idle Vent

1969 Oldsmobile Delta 88 Base, 7.5L Eng, Eng CD UD, Not Available TransSECTION Idle Vent
NOTE: Idle vent is not used on all carburetor models. New procedure below is required for proper emission control. On cars with idle stop solenoid, solenoid must be energized (ignition on) when checking and adjusting idle vent.

After idle speed and mixture adjustment completed and with throttle valves closed in curb idle position (idle stop solenoid energized), use feeler gauge to measure vent valve opening or clearance between lower face of valve and air horn at widest opening point. If clearance not correct (see SpecificationsΒ ), adjust by bending actuating tang on pump lever as required.

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.