Combination valve for secondary air injection (AIR), checking function and for leaks
WARNING: This page is about a different car, the 2008 Audi RS 4 and 2007 Audi RS 4. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Hand vacuum pump VAS 6213
Work procedure
- Hose connections properly sealed.
- Remove Secondary Air Injection (AIR) system combi-valve: Left → Left combination valve for secondary air injection (AIR), removing and installing , right → Right combination valve for secondary air injection, removing and installing .
Fig 2: Connecting Hand Vacuum Pump VAS 6213 To Vacuum Connection On Secondary Air Injection Combi-Valve
- Connect Hand Vacuum Pump VAS 6213 to vacuum connection - 1 - on secondary air injection combi-valve.
- Connect an appropriate assisting hose - 2 - to Secondary Air Injection (AIR) combi-valve.
- Blow into assisting hose - 2 - using light pressure (do not use pressurized air).
- Secondary Air Injection (AIR) combi-valve must be closed, it must not be possible to blow through.
- Operate hand vacuum pump.
- The Secondary Air Injection (AIR) combi-valve must open, it must be possible to blow through.
If secondary air injection combi-valve does not open:
- Replace Secondary Air Injection (AIR) combi-valve: Left → Left combination valve for secondary air injection (AIR), removing and installing , right → Right combination valve for secondary air injection, removing and installing .