INTAKE MANIFOLD VACUUM INSPECTION [MZR 2.3 DISI Turbo]

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1.  Disconnect the vacuum hose connected between the check valve and the intake manifold from the intake manifold and install the vacuum gauge. (See QUICK RELEASE CONNECTOR (EMISSION SYSTEM) REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo])

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 2.3 DISI Turbo].)
―  Air suction
•  Installation areas of each vacuum hose
•  Installation areas of throttle body
•  Installation areas of fuel injector
•  Installation areas of PCV valve
•  Installation areas of intake manifold
Standard
Approx. –71 kPa {–533 mmHg, –21 inHg}