Secondary Air Combination Valves, Checking Function and Leakage

Secondary Air Combination Valves, Checking Function and Leakage

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 left and right vacuum hoses - 1 and 2 - on the combination valve being checked.






- 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; to do so press the release buttons.






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

• The AIR combination valves must be closed. It must not be possible to blow through.

- Operate hand vacuum pump.

• The combination valve must open, it must be possible to blow through it.

- If the AIR valve does not open, replace. Refer to => [ Left Secondary Air Combination Valve ] Left Secondary Air Combination Valve, => [ Right Secondary Air Combination Valve ] Right Secondary Air Combination Valve.

Assembling

Assemble in reverse order of disassembling. Note the following:

• The hose connections as well as the air guide pipes and hoses must be free of oil and grease before installing.

• Secure all hose connections with hose clamps of the same type as those equipped by the factory. Refer to the Parts Catalog.

• In order to be able to securely mount the air guide hoses on their connectors, spray the screws on the previously used clamps with a rust remover.

- Install the tower brace.