EGR Valve: Testing and Inspection

EGR VALVE CHECK
1. Remove the EGR valve and inspect for sticking, carbon deposits, etc. If found, clean with a suitable solvent so that the valve seats correctly.




2. Connect a hand vacuum pump to the EGR valve.
3. Apply 67 kPa (20 in Hg) of vacuum, and check to be sure that the vacuum is maintained.




4. Apply a vacuum and check the passage of air by blowing through one side of the EGR passage.

NOTE: Passage of air should be checked by blowing the valve port.

5. Reinstall the EGR valve, using a new gasket, and tighten to the specified torque.

Tightening torque: 22 ± 4 N.m (16 ± 3 ft-lb)