INTAKE MANIFOLD VACUUM INSPECTION [MZR 1.6]

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

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 1.6].)

― 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

ATX: Approx. -73.8 kPa {-554 mmHg, -21.8 inHg}

MTX: Approx. -72.6 kPa {-545 mmHg, -21.4 inHg}