Diagnostic procedure
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.
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) DIAGNOSTIC PROCEDURE
| STEP | INSPECTION | RESULTS | ACTION |
|---|---|---|---|
| 1 | Inspect for blockage/restriction or opening between the engine vacuum port and the charcoal canister. Inspect for blockage/restriction or opening in the fuel tank vent system. Is fault indicated? |
Yes | Replace the vacuum hose. |
| No | Go to the next step. | ||
| 2 | Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION .) Is the solenoid operating properly? |
Yes | Go to the next step. |
| No | Replace the purge solenoid valve. | ||
| 3 | Visually inspect for fuel leakage at the fuel injector, O-ring and the fuel line. Service if necessary. Install the fuel pressure gauge between the fuel pipe and the fuel distributor. Start engine and run it at idle. Measure the fuel line pressure at idle. Is the fuel line pressure correct at idle? (See FUEL LINE PRESSURE INSPECTION .) |
Yes | Go to the next step. |
| No | Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION .) |
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| 4 | Verify that the charcoal canister is installed properly. Is the charcoal canister installed properly? |
Yes | Go to the next step. |
| No | Install the charcoal canister properly. | ||
| 5 | Inspect for air leakage from charcoal canister. (See CHARCOAL CANISTER INSPECTION .) Is there air leakage from the charcoal canister? |
Yes | Replace the charcoal canister. |
| No | Go to the next step. | ||
| 6 | Connect the WDS or equivalent to the DLC-2. Turn the ignition switch to the ON position (Engine off). Retrieve any DTCs. Are there any DTCs displayed? |
Yes | DTC is displayed: Go to the applicable DTC inspection. (See DTC TABLE .) |
| No | No DTC is displayed: Inspect the charcoal canister for fuel saturation. If there is an excess amount of liquid fuel present, replace the charcoal canister. |
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| 7 |
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