INTAKE MANIFOLD VACUUM INSPECTION [L8, LF]

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1. Verify that the intake air hoses are installed securely.

2. Disconnect the vacuum hose connecting the intake manifold and the purge solenoid valve (purge solenoid valve side) and install the vacuum gauge.

3. Warm up the engine.

4. Measure the intake manifold vacuum while idling (no load) using the vacuum gauge.

  • If not within the specification, perform the following inspections.
    ― Compression pressure (See COMPRESSION INSPECTION [L8, LF].)
    ― Air intake
      • Each hose installation part
      • Throttle body installation part
      • Fuel injector installation part
      • PCV valve installation part
      • Dynamic chamber installation port
      • Intake manifold installation part

  Standard

  European (L.H.D. U.K.) specs.: –66.7 kPa {–500 mmHg, –19.7 inHg} or more
  Except European (L.H.D. U.K.) specs.: –72.2 kPa {–542 mmHg, –21.3 inHg} or more