Component Tests and General Diagnostics

The contents of this article / image reflect the changes called out
in Manual update 18-137-09 dated 02/23/09.


Intake Manifold Vacuum

INSPECTION
1) Warm-up the engine.
2) Remove the collector cover.
3) Remove the intercooler.
4) Disconnect the brake booster vacuum hose from the intake manifold, and then install the vacuum gauge.
5) Install the intercooler.
6) 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 below.





Vacuum pressure (at idling, A/C OFF): Less than -68.0 kPa (-510 mmHg, -20.08 inHg)