Intake Manifold Vacuum Inspection

WARNING: This page is about a different car, the 2016 Mazda CX-3. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect the evaporative hose (purge solenoid valve side) connecting the intake manifold and the purge solenoid valve, then install the vacuum gauge. (Refer to 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 (Refer to COMPRESSION INSPECTION .)
  - Check valve (Refer to CHECK VALVE INSPECTION .)
  - Air suction
    - Installation areas of each vacuum hose
    - Evaporative hose connecting part
    - 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 inHg}