Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Component Tests and General Diagnostics

Intake Manifold Vacuum

INSPECTION
1. Warm-up the engine.
2. Disconnect the brake vacuum hose, and then install the vacuum gauge to hose fitting on manifold.
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)