INTAKE MANIFOLD VACUUM INSPECTION [MZR 2.0, MZR 2.5]

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1.  Disconnect the evaporative hose (purge solenoid valve side) and install the vacuum gauge. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [MZR 2.0, MZR 2.5].)

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

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 [MZR 2.0, MZR 2.5].)
―  Air suction
•  Installation areas of each vacuum hose
•  Installation area of throttle body
•  Installation area of fuel injector
•  Installation area of PCV valve
•  Installation area of intake manifold
Standard
MZR 2.0: Approx. –68.0 kPa {–510 mmHg, –20.1 inHg}
MZR 2.5: Approx. –70.0 kPa {–525 mmHg, –20.7 inHg}