Component Tests and General Diagnostics

Intake Manifold Vacuum

INSPECTION
1. Warm-up the engine.
2. Disconnect the brake vacuum hose, and then install the vacuum gauge to hose fitting on manifold.
3. Keep the engine at idle speed, and then read the vacuum gauge indication.








By observing the gauge needle movement, the internal condition of engine can be diagnosed as described below.
Vacuum pressure (at idling, A/C "OFF"): Less than -60.0 kPa (50 mmHg, -17.72 in Hg)