Intake Manifold Vacuum Inspection

1. Disconnect the evaporative hose No. 3 (purge solenoid valve side) and install the vacuum gauge. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION .)
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 (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 inHg}