Intake Manifold Vacuum Inspection: Notes
WARNING: This page is about a different variant/trim than selected.
- Disconnect the evaporative hose No. 1 (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 VACUUM LINE INSPECTION ).
- Check valve (between vacuum pump and power brake unit) (See VACUUM LINE 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
- If not within the specification, perform the following inspections.