Leak test
- Pull hose from Secondary Air Injection (AIR) pump motor and blow in with light pressure (do not use pressurized air).
- Both combination valves must be closed, it must not be possible to blow through hose
If it is possible to blow through hose:
- Disconnect connecting line from Secondary Air Injection (AIR) pump motor to combination valve at one of the combination valves, close connecting line and blow through again.
- Replace combination valve remaining on connecting line
If it is no longer possible to blow through hose:
- Replace combination valve that was removed from connecting line