Intake Manifold Vacuum Inspection

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the evaporative hose No. 3 (purge solenoid valve side) and install the vacuum gauge. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION .)
Verify that the intake air hoses are installed securely.
Warm up the engine.
Measure the intake manifold vacuum while idling (no load) using the vacuum gauge.
- If not within the specification, perform the following inspections.
  - Compression pressure (See COMPRESSION INSPECTION .)
  - Check valve (between intake manifold and vacuum pump) (See CHECK VALVE INSPECTION .)
  - Check valve (between vacuum pump and power brake unit) (See CHECK VALVE INSPECTION .)
  - Air suction
    - Installation areas of each vacuum hose
    - Installation area of throttle body
    - Installation area of fuel injector
    - Installation area of PCV valve
    - Installation area of intake manifold

Standard

Approx. -60.0 kPa {-450.0 mmHg, -17.7 in Hg}