Component Tests and General Diagnostics

Intake Manifold Vacuum

INSPECTION
1) Warm up the engine.
2) Disconnect the brake vacuum hose from the manifold and install a vacuum gauge.
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)