Exhaust Gas Recirculation: Testing and Inspection

Exhaust Gas Recirculation Valve, Checking

Special tools, testers and auxiliary items required

• Hand operated Vacuum Pump.

Test requirements

• Ignition switched off.

Test procedure

- Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] Preliminary Check.

- Disconnect EGR valve vacuum hose.

- Connect Hand operated Vacuum Pump to the EGR valve vacuum port.

- Using the Hand operated Vacuum Pump, open the EGR valve.

- The diaphragm must move towards the EGR valve vacuum port.

- Disconnect the Hand operated Vacuum Pump from the EGR valve vacuum port opening the EGR valve.

- The diaphragm must move away from the EGR valve vacuum port closing the EGR valve.

If the diaphragm does not move or moves in one direction only:

- Replace the EGR valve.