Component Tests and General Diagnostics

Intake Manifold Vacuum

INSPECTION
1) Warm up the engine.
2) Remove the collector cover.

NOTE:
Follow these procedures for removal of the collector cover.

1) Lift up the rear side holding two positions (A).
2) Lift up the front side holding two positions (B) while moving it in the forward direction of the vehicle.





3) Remove the air intake boot.
4) Disconnect the brake booster vacuum hose from the intake manifold, and attach the vacuum gauge.





5) Install the air intake boot.
6) Keep the engine at idle speed and read the vacuum gauge indication.

NOTE:
Condition of engine inside can be diagnosed by observing the behavior of the vacuum gauge needle as described in table below.

Intake manifold vacuum (at idling, A/C OFF):
Standard
Less than -60.0 kPa (-450 mmHg, -17.72 inHg)