Intake Manifold: Testing and Inspection

INTAKE AIR SYSTEM 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.
- Accelerator cable play
- Compression pressure
- 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