Intake Manifold Vacuum Inspection: Notes
- Verify air intake hoses are installed properly.
- Start the engine and run at idle.
- Measure the manifold vacuum using a vacuum gauge.
- If not as specified, inspect the following.
- Air suction at:
TB Installation Point
Intake Manifold Installation Point
PCV Valve Installation Point
- Fuel Injector Insulator
- Accelerator Cable Free Play
- Engine Compression. See COMPRESSION INSPECTION .
NOTE:- Air suction can be located by engine speed change when lubricant is sprayed on the area where suction is occurring.
- Air suction at: