Component Tests and General Diagnostics

Intake Manifold Vacuum

INSPECTION
1) Warm-up the engine.
2) Disconnect the brake vacuum hose from the intake manifold, and then install the vacuum gauge.





3) Keep the engine at the 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 (-450 mmHg, -17.72 inHg)