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 valve, and connect a vacuum gauge to the ventilation hose.
4. 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)