Component Tests and General Diagnostics

INTAKE MANIFOLD VACUUM INSPECTION [L3]

1. Verify that the intake air hoses are installed securely.
2. Warm up the engine.
3. Disconnect the vacuum hose connecting the intake manifold and the purge solenoid valve (purge solenoid valve side) and install the vacuum gauge
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 [L3].)
- Air suction (installation areas of throttle body, fuel injector, PCV valve, intake manifold)

Standard
ATX: -57.0 kPa {-428 mmHg, -16.9 inHg} or more
MTX: -60.0 kPa {-450 mmHg, -17.8 inHg} or more