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Home >> Oldsmobile >> 1987 >> Custom Cruiser >> Repair and Diagnosis >> Engine Performance >> System >> Carburetor - ROCHESTER E4MC/E4ME >> Adjustments >> Air Valve Spring
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Air Valve Spring

  1. Use 3/32" (2.38 mm) Allen wrench to loosen lock screw. Turn tension adjusting screw counterclockwise until air valve opens part way.
  2. Turn tension adjusting screw clockwise until air valve just closes. Then turn adjusting screw clockwise specified number of turns. See Fig 1.
    Fig 1: Air Valve Spring Adjustment Apply lithium base grease to lubricate contact area.
    G5243
  3. Hold adjusting screw and tighten lock screw. Apply lithium base grease to lubricate contact area.
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