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1.Disconnect the evaporative hose No.3 (purge solenoid valve side) and install the vacuum gauge. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

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 [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

― Check valve (between intake manifold and vacuum pump) (See VACUUM LINE INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

― Check valve (between vacuum pump and power brake unit) (See VACUUM LINE INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

― 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