Left Secondary Air Injection Combination Valve, Checking

Left Secondary Air Injection Combination Valve, Checking

Test conditions
- Hose connections properly sealed.

Work sequence
- Remove the Left combination valve.







- Connect an appropriate assisting hose - arrow - to the combination valve.
- Blow into assisting hose using light pressure (do not use pressurized air).
- Combination valve must remain closed preventing air from passing through.
- Blow into the assisting hose using a higher pressure (do not use pressurized air).
- The combination valve must open allowing air to pass through.

If the valve does not open and close, or is stuck:
- Replace the left combination valve.