Intake Manifold Vacuum Inspection
- Verify the air intake hoses are installed properly.
- Start the engine and let it idle.
- Disconnect the vacuum hose between the intake manifold and purge solenoid valve from the intake manifold side.
- Connect a vacuum gauge to the intake manifold and measure the intake manifold vacuum.
- If not within specification, inspect the following:
Specification
-60.0 kPa {-450 mmHg, -17.7 inHg}
NOTE:- Air suction can be located by the engine speed change when lubricant is sprayed on the area where suction is occurring. Check the following places:
- Air suction at throttle body, charge air cooler, intake manifold and PCV valve installation points
- Engine compression (See COMPRESSION INSPECTION .)