NO.20 FUEL ODOR (IN ENGINE COMPARTMENT)[AJ (3.0L Duratec)]

• The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:

― Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel.

― Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE SERVICE PRECAUTION” and “AFTER SERVICE PRECAUTION” described in this manual.

(See BEFORE SERVICE PRECAUTION[AJ (3.0L Duratec)].)

(See AFTER SERVICE PRECAUTION[AJ (3.0L Duratec)].)

STEP	INSPECTION	ACTION
1	• Visually inspect for fuel leakage at fuel injector O-ring, and fuel line. • Service if necessary. • Install the fuel pressure gauge to the fuel line. • Measure the fuel pressure after the ignition switch to off from the engine run idle. • Is the fuel pressure held? (See FUEL LINE PRESSURE INSPECTION[AJ (3.0L Duratec)].)	Yes	Go to the next step.
No	Inspect the fuel injector. (See FUEL INJECTOR INSPECTION[AJ (3.0L Duratec)].) • If the fuel injector is normal, replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)
2	• Inspect for blockage/restriction or open between engine vacuum port and charcoal canister. • Inspect for blockage in fuel tank vent system. • Is the fault indicated?	Yes	Replace the vacuum hose.
No	Go to the next step.
3	• Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION[AJ (3.0L Duratec)].) • Is the solenoid operating properly?	Yes	Go to the next step.
No	Replace the purge solenoid valve.
4	• Connect the M-MDS to the DLC–2. • Turn the ignition switch to the ON position (Engine off). • Retrieve any DTCs. • Is “PASSED” displayed?	Yes	No DTC is displayed: • Inspect the charcoal canister for fuel saturation. ― If the excess amount of liquid fuel present, replace the charcoal canister.
No	DTC is displayed: • Go to the appropriate DTC test.
5	• Verify the test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If malfunction remains, inspect related Service 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 the PCM.

STEP

INSPECTION

ACTION

• Visually inspect for fuel leakage at fuel injector O-ring, and fuel line.

• Service if necessary.

• Install the fuel pressure gauge to the fuel line.

• Measure the fuel pressure after the ignition switch to off from the engine run idle.

• Is the fuel pressure held?

(See FUEL LINE PRESSURE INSPECTION[AJ (3.0L Duratec)].)

Yes

Go to the next step.

Inspect the fuel injector.

(See FUEL INJECTOR INSPECTION[AJ (3.0L Duratec)].)

• If the fuel injector is normal, replace the fuel pump unit.

(See FUEL PUMP UNIT REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)

• Inspect for blockage/restriction or open between engine vacuum port and charcoal canister.

• Inspect for blockage in fuel tank vent system.

• Is the fault indicated?

Yes

Replace the vacuum hose.

Go to the next step.

• Inspect the purge solenoid valve.

(See PURGE SOLENOID VALVE INSPECTION[AJ (3.0L Duratec)].)

• Is the solenoid operating properly?

Yes

Go to the next step.

Replace the purge solenoid valve.

• Connect the M-MDS to the DLC–2.

• Turn the ignition switch to the ON position (Engine off).

• Retrieve any DTCs.

• Is “PASSED” displayed?

Yes

No DTC is displayed:

• Inspect the charcoal canister for fuel saturation.

― If the excess amount of liquid fuel present, replace the charcoal canister.

DTC is displayed:

• Go to the appropriate DTC test.

• Verify the test results.

― If normal, return to the diagnostic index to service any additional symptoms.

― If malfunction remains, inspect related Service 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 the PCM.

20	Fuel odor (in engine compartment)
DESCRIPTION	• Gasoline fuel smell or visible leakage
POSSIBLE CAUSE	• Excessive fuel pressure • Purge solenoid valve malfunction • Fuel tank vent system blockage • Charcoal canister malfunction • Fuel leakage from fuel system Warning • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services: ― Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep sparks and flames away from fuel. ― Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete “BEFORE SERVICE PRECAUTION” and “AFTER SERVICE PRECAUTION” described in this manual. (See BEFORE SERVICE PRECAUTION[AJ (3.0L Duratec)].) (See AFTER SERVICE PRECAUTION[AJ (3.0L Duratec)].)