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Home >> Mitsubishi >> 2003 >> Lancer Evolution >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (On-Vehicle Service- Except Evolution) >> On Vehicle Service >> Manifold Vacuum Check
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Manifold Vacuum Check

WARNING: This page is about a different variant/trim than selected.
  1. Before inspection, check that the engine oil, starter and battery are normal. Also, set the vehicle to the following conditions:
    • Engine coolant temperature: 80 - 95°C (176 - 203°F)
    • Lights, and all accessories: OFF
    • Transaxle: Neutral (P range on vehicles with A/T)
  2. Connect a tachometer.
  3. Attach a tee-fitting union to the vacuum hose between the fuel pressure regulator and the intake manifold plenum, and connect a vacuum gauge.
  4. Start the engine ad check that idle speed is within specification. Then check the vacuum gauge reading.
    1. Idle speed: 700 +/- 100 r/min
    2. Minimum limit: 60 kPa (18 in Hg)
    Fig 1: Connecting Vacuum Gauge
    G01873380Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
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