Air Injection Control Valve: Testing and Inspection

Secondary Air Injection Combination Valves, Checking for Function and Leaks

Special tools, testers and auxiliary items required

• Hand Vacuum Pump (VAS 6213)

Procedure

• Hose connections properly sealed.

- Remove affected secondary air injection combi-valve. Refer to => [ Secondary Air Injection Combination Valves ] Service and Repair.

- Connect (VAS 6213) to vacuum connection - 1 - on secondary air injection combi-valve.





- Connect an appropriate assisting hose - 2 - to secondary air injection combi-valve.

- Blow into the assisting hose - 2 - using light pressure (do not use pressurized air).

• Secondary air injection combination valve must be closed, it must not be possible to flush.

- Operate the hand vacuum pump.

• The secondary air injection combination valve must open, it must be possible to flush.

If secondary air injection combi-valve does not open:

- Replace affected secondary air injection combi-valve. Refer to => [ Secondary Air Injection Combination Valves ] Service and Repair.