Component Tests and General Diagnostics

INTAKE MANIFOLD VACUUM INSPECTION [MZR 1.5]

1. Remove the fresh-air duct and the air cleaner case as a single unit. (See Service and Repair.)

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 Service and Repair.)

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.

- Compression pressure (See Testing and Inspection.)
- Air suction (installation areas of throttle body, fuel injector, PCV valve, intake manifold)

Standard
- Approx. -60.0 kPa {-450 mmHg, -17.7 inHg}