EGR Valve: Testing and Inspection

1. Start the engine and let it idle.
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 to -9.9kPa{ -25 to -75mmHg, -1.0 to -2.9inHg}

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