INTAKE MANIFOLD VACUUM INSPECTION [ZJ, ZY]

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1.  Remove the fresh-air duct and the air cleaner case as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZJ, ZY].)

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

3.  Install the fresh-air duct and the air cleaner case as a single unit. (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [ZJ, ZY].)

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

5.  Warm up the engine.

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

•  If not within the specification, perform the following inspections.

―  Accelerator cable play

―  Compression pressure (See COMPRESSION INSPECTION [ZJ, ZY].)

―  Air suction (installation areas of throttle body, fuel injector, PCV valve, intake manifold)