Component Tests and General Diagnostics

INTAKE MANIFOLD VACUUM INSPECTION [LF, 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. Service and Repair

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

NOTE:
- If any air suction exists, the change in engine speed can be made apparent by spraying the penetrant lubricating spray on the applicable part.

Standard
- LF ATX: -55.0 kPa {-413 mmHg, -16.3 inHg} or more
- LF MTX: -57.0 kPa {-428 mmHg, -16.9 inHg} or more
- L3 ATX: -57.0 kPa {-428 mmHg, -16.9 inHg} or more
- L3 MTX: -60.0 kPa {-451 mmHg, -17.8 inHg} or more