Secondary Air Injection Combination Valves, Checking for Function and Leaks

Secondary Air Injection Combination Valves, Checking for Function and Leaks

Special tools, testers and auxiliary items required

• Hand Vacuum Pump (VAS 6213)

Procedure

• Vacuum lines and hose connections free of leaks.

• Vacuum lines not plugged.

- Remove the engine covers - arrows -.





- Remove the vacuum hose - 2 - to the combination valve to be checked.





• The hose for the left combination valve is illustrated.

- Connect the (VAS 6213) to the vacuum hose for the combination valve to be checked.

- Remove the front secondary air hose - arrow - from its bracket and disconnect it; do to so press the release buttons.





- Blow into the Secondary Air Injection (AIR) hose using light pressure (do not use pressurized air).

• The secondary air injection combination valves must be closed. It must not be possible to blow through.

- Operate hand vacuum pump.

• The relevant combination valve must open, it must not be possible to blow through

- If the secondary air combination valve does not open, replace. Refer to => [ Secondary Air Injection Left Combination Valve ] Secondary Air Injection Left Combination Valve or => [ Secondary Air Injection Right Combination Valve ] Secondary Air Injection Right Combination Valve.

Assembling

Assembly is in reverse order of removal, note the following:

• Replace O-ring.