Check Valve (One-Way) Inspection
WARNING: This page is about a different car, the 2005 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the check valve.
- Verify that there is airflow at port B when blowing air by mouth from port A.
- Verify that there is no airflow at port A when blowing air by mouth from port B.
- If it cannot be verified, replace the check valve.
Courtesy of MAZDA MOTORS CORP.