LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mazda >> 1984 >> GLC 2D Hatchback >> Repair and Diagnosis >> Engine Performance >> System >> Feedback Carburetor System >> Testing >> Idle Up System >> Servo Diaphragm Adjustment (GLC)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Servo Diaphragm Adjustment (GLC)

  1. Remove the air cleaner. Warm up engine to operating temperature and connect a tachometer. Disconnect a vacuum sensing tube from the servo. Connect servo to intake manifold vacuum.
  2. Increase engine speed to 2000 RPM and release throttle. Engine speed should be within 1100-1300 RPM. If engine speed is not within specification, adjust servo screw.
Fig 1: Idle Up System
G74110
scientia non olet · About LEMON Manuals