Secondary Air Inlet Valve, Checking

Checking conditions
- Engine oil temperature 5 to 33 °C
- Secondary air injection pump motor OK.

Checking sequence







- Disconnect vacuum hose from combination valve (arrow).
- Start engine and run at idling speed. When secondary air injection pump motor starts, vacuum must be felt on vacuum hose.

If no intake manifold vacuum is perceptible:
- Switch engine off.
- Check activation of valve.
Testing and Inspection