NONRETURN Valve Inspection

WARNING: This page is about a different car, the 2005 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

Remove the nonreturn valve. (See FUEL TANK REMOVAL/INSTALLATION (+)
Verify that the nonreturn valve operates under its own weight.
- If the valve does not operate, replace the nonreturn valve.
Fig 1: Removing Nonreturn Valve
Courtesy of MAZDA MOTORS CORP.