LEMON Manuals: Even more car manuals for everyone
Home >> Mitsubishi >> 2004 >> Lancer Evolution >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> On-Vehicle Service - Evolution >> On-Vehicle Service >> Manifold Vacuum Check

Manifold Vacuum Check

  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
  2. Connect an engine tachometer.
  3. Attach a tee-fitting joint to the vacuum hose between the fuel pressure solenoid and the intake manifold plenum, and connect a vacuum gauge.
  4. Start the engine and check that idle speed is within specification. Then check the vacuum gauge reading.
    1. Idle speed: 850 +/- 100 r/min 
    2. Minimum limit: 51 kPa (15 in Hg) 
    Fig 1: Checking Manifold Vacuum
    G00977458Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
scientia non olet · About LEMON Manuals