NO.20 FUEL ODOR (IN ENGINE COMPARTMENT)[L3 Turbo]

20	FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION	Gasoline fuel smell or visible leakage
POSSIBLE CAUSE	• Excessive fuel pressure • Purge solenoid valve malfunction • Fuel system vent system blockage • Evaporative gas leakage • Improper connection of evaporative related vacuum hoses • 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 injury 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[L3 Turbo].) (See AFTER SERVICE PRECAUTION[L3 Turbo].) Caution • Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

FUEL ODOR (IN ENGINE COMPARTMENT)

DESCRIPTION

Gasoline fuel smell or visible leakage

POSSIBLE CAUSE

• Excessive fuel pressure

• Purge solenoid valve malfunction

• Fuel system vent system blockage

• Evaporative gas leakage

• Improper connection of evaporative related vacuum hoses

• 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 injury 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[L3 Turbo].)

(See AFTER SERVICE PRECAUTION[L3 Turbo].)

Caution

• Disconnecting/connecting the quick release connector without cleaning it may possibly cause damage to the fuel pipe and quick release connector. Always clean the quick release connector joint area before disconnecting/connecting, and make sure that it is free of foreign material.

STEP	INSPECTION	RESULTS	ACTION
1	Visually inspect fuel leakage at fuel line. Is there any fuel leakage?	Yes	Service if necessary.
No	Go to the next step.
2	Inspect the vacuum hose routine. (See VACUUM HOSE ROUTING DIAGRAM[L3 Turbo].) Are vacuum hoses routines properly?	Yes	Go to the next step.
No	Reconnect the vacuum hose.
3	Perform the Evaporative Emission (EVAP) System Leak Inspection. Is there any problem found?	Yes	Repair or replace suspected part according to the inspection results.
No	Go to the next step.
4	Inspect the airflow of purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION[L3 Turbo].) Is the purge solenoid airflow properly?	Yes	Go to the next step.
No	Replace the purge solenoid valve.
5	Connect the M-MDS to the DLC-2. Access the FUEL_PRESPID. Monitor the FUEL_PRES PID while idle and race the engine. Is the FUEL_PRES PID indicate 15 MPa {153 kgf/cm², 2175 psi} or less?	Yes	Inspect the charcoal canister for fuel saturation. If excess amount of liquid fuel is present, replace the charcoal canister.
No	Inspect the fuel pressure sensor and the high pressure fuel pump. (See FUEL PRESSURE SENSOR INSPECTION[L3 Turbo].) (See HIGH PRESSURE FUEL PUMP INSPECTION[L3 Turbo].)
5	Verify test results. • If normal, return to the diagnostic index to service any additional symptoms. • If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the repair or diagnosis. ― If the vehicle is repaired, troubleshooting is completed. ― If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.

STEP

INSPECTION

RESULTS

ACTION

Visually inspect fuel leakage at fuel line.

Is there any fuel leakage?

Yes

Service if necessary.

Go to the next step.

Inspect the vacuum hose routine.

(See VACUUM HOSE ROUTING DIAGRAM[L3 Turbo].)

Are vacuum hoses routines properly?

Yes

Go to the next step.

Reconnect the vacuum hose.

Perform the Evaporative Emission (EVAP) System Leak Inspection.

Is there any problem found?

Yes

Repair or replace suspected part according to the inspection results.

Go to the next step.

Inspect the airflow of purge solenoid valve.

(See PURGE SOLENOID VALVE INSPECTION[L3 Turbo].)

Is the purge solenoid airflow properly?

Yes

Go to the next step.

Replace the purge solenoid valve.

Connect the M-MDS to the DLC-2.

Access the FUEL_PRESPID.

Monitor the FUEL_PRES PID while idle and race the engine.

Is the FUEL_PRES PID indicate 15 MPa {153 kgf/cm², 2175 psi} or less?

Yes

Inspect the charcoal canister for fuel saturation.

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

Inspect the fuel pressure sensor and the high pressure fuel pump.

(See FUEL PRESSURE SENSOR INSPECTION[L3 Turbo].)

(See HIGH PRESSURE FUEL PUMP INSPECTION[L3 Turbo].)

Verify test results.

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

• If a malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform the repair or diagnosis.

― If the vehicle is repaired, troubleshooting is completed.

― If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.