Diagnostic procedure
WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
FUEL ODOR (IN ENGINE COMPARTMENT) - DIAGNOSTIC PROCEDURE
| STEP |
INSPECTION |
ACTION |
| 1 |
- Visually inspect for fuel leakage at fuel injector O-ring, and fuel line.
- Service as necessary.
- Is fuel line pressure held after ignition key is turned to OFF?
|
Yes |
Go to next step. |
| No |
Inspect pressure regulator diaphragm condition.
- If condition is okay, inspect fuel injector.
- If condition is not okay, replace pressure regulator.
|
| 2 |
- Inspect for blockage/restriction or open between engine vacuum port and charcoal canister.
- Inspect for blockage in fuel tank vent system.
- Is fault indicated?
|
Yes |
Replace vacuum hose. |
| No |
Go to next step. |
| 3 |
|
Yes |
Go to next step. |
| No |
Replace purge solenoid valve. |
| 4 |
- Connect WDS or equivalent to DLC-2.
- Turn ignition key to ON (Engine OFF).
- Retrieve any DTCs.
- Is "PASSED" displayed?
|
Yes |
No DTC is displayed:
- Inspect charcoal canister for fuel saturation.
- If excess amount of liquid fuel present, replace charcoal canister.
|
| No |
DTC is displayed:
- Go to appropriate DTC test.
|
| 5 |
- Verify test results.
- If okay, return to diagnostic index to service any additional symptoms.
- If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
- If vehicle is repaired, troubleshooting completed.
- If vehicle is not repaired or additional diagnostic information is not available, replace or reprogram PCM.
|