Mazda RX8 - Page 142

Retrieve any DTCs.
Are there any DTCs displayed?
No
No DTC is displayed:
Go to the next step.
Yes
Inspect for the following:
• Improper use of fuel nozzle
• Fuel is not inserted correctly.
• Inspect fuel shut-off valve.
2
Remove the fuel-filler pipe.
Make sure the nonreturn valve is installed
properly.
Inspect the nonreturn valve operation.
Is the nonreturn valve normal?
No
Nonreturn valve is installed improperly:
Reinstall the nonreturn valve to the proper
position.
Nonreturn valve does not operate properly:
Replace the nonreturn valve.
3
• Verify test results.
! If normal, return to the diagnostic index to service any additional symptoms.
! If the malfunction remains, inspect the related Service Bulletins and/or the On-line Repair
Information and perform the repair or diagnosis.
(w) RX8-Engine Troubleshooting
Page 142