EGR Valve: Testing and Inspection

Inspection
1. Start the engine and let it idle.

EGR Valve Vacuum Inspection:

2. Connect a vacuum pump as shown in the figure and apply vacuum.
3. Verify that the engine runs roughly or stalls at more than the specified vacuum.

Specification: 3.4-9.9 kPa (26-75 mm/Hg, 1.0-2.9 in.Hg)

4. If not as specified, replace the EGR valve.