Diagnostic Procedure

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.

NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [BP, BP WITH TC] DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	Visually inspect for fuel leakage at fuel injector O-ring, pulsation damper and fuel line. Service if necessary. Is fuel line pressure fluctuation within specification after ignition switch is turned off? (See FUEL LINE PRESSURE INSPECTION )	Yes	Go to the next step.
1		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. Is fault indicated?	Yes	Replace vacuum hose.
2		No	Go to the next step.
3	Inspect purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION ) Is solenoid operating properly?	Yes	Go to the next step.
3		No	Replace purge solenoid valve.
4	Connect WDS or equivalent to DLC-2. Turn ignition switch to ON. Retrieve any DTC. Is "PASSED" displayed?	Yes	No DTC displayed: Inspect charcoal canister for fuel saturation. If excess amount of liquid fuel present, replace charcoal canister.
4		No	DTC 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 PCM.