Component Tests and General Diagnostics

INTAKE AIR SYSTEM 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.
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 (See COMPRESSION INSPECTION[LF, L3].)
- 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