Mazda 3 Service Manual: Intake Manifold Vacuum Inspection [Mzr 2.0, Mzr 2.5]

1. Disconnect the evaporative hose (purge solenoid valve side) and install the vacuum gauge..

2. Verify that the intake air hoses are installed securely.

3. Warm up the engine.

4. Measure the intake manifold vacuum while idling (no load) using the vacuum gauge.

• If not within the specification, perform the following inspections.

• Compression pressure.

• 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

• MZR 2.0: Approx. –68.0 kPa {–510 mmHg, –20.1 inHg}

• MZR 2.5: Approx. –70.0 kPa {–525 mmHg, –20.7 inHg}