Component Tests and General Diagnostics
Intake Manifold VacuumINSPECTION
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 attach the vacuum gauge.
5) Install the intercooler.
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
-66.7 kPa (-500 mmHg, -19.70 inHg) or more
7) After inspection, install the related parts in the reverse order of removal.
