Component Tests and General Diagnostics

MANIFOLD VACUUM CHECK
1. Start the engine and allow it to warm up until the temperature of the engine coolant reaches 80 - 95°C (176 - 203°F).
2. Connect an engine tachometer.





3. Disconnect the ventilation hose from the positive crankcase ventilation (PCV) valve, and connect a vacuum gauge to the ventilation hose.
4. Plug the PCV valve.
5. Start the engine and check that idle speed is within specification. Then check the vacuum gauge reading.
Idle speed: 700 ± 100 r/min
Minimum limit: 60 kPa (18 inch Hg)