EGR Valve: Testing and Inspection

EGR VALVE INSPECTION PROCEDURE
1. CHECK SEATING OF THE EXHAUST GAS RECIRCULATION (EGR) VALVE.
- Start the engine and check that the engine starts and runs at idle.

2. CHECK EGR VALVE OPERATION.
- Apply vacuum directly to the EGR valve with the engine idling.
- Check that the engine runs rough or dies.
- Reconnect the vacuum hoses to the proper locations.
If no problem is found with this inspection, the valve is okay; otherwise inspect EGR valve and passages.

3. VISUAL INSPECTION.
- Remove EGR valve.
- Check the valve for sticking and heavy carbon deposits.
- If a problem is found, repair as needed.
- Install EGR Valve with new gasket