Component Tests and General Diagnostics
Intake Manifold VacuumINSPECTION
1) Remove the collector cover.
2) Warm-up the engine.
3) Disconnect the brake vacuum hose from intake manifold, and then install the vacuum gauge.
4) Keep the engine at idle speed and read the vacuum gauge indication.
By observing the gauge needle movement, the internal condition of the engine can be diagnosed as described.
Vacuum pressure (at idling, A/C OFF):
Less than -70.6 kPa (-530 mm Hg, -20.85 in-Hg) (MT model)
Less than -68.0 kPa (-510 mm Hg, -20.08 in-Hg) (AT model)
Vacuum pressure:
