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

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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.

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
Visually inspect the fuel leakage at the fuel line.
Is there any leakage?
Yes
Repair or replace the malfunctioning parts according to the inspection results.
No
Go to the next step.
2
Inspect the vacuum hose routine.
(See INTAKE-AIR SYSTEM 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.
(See ENGINE CONTROL SYSTEM OPERATION INSPECTION [L3 Turbo].)
Is the EVAP system normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning parts according to the inspection results.
4
Inspect the airflow of the 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.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [L3 Turbo].)
5
Access the FUEL_PRES PID using the M-MDS.
(See ON-BOARD DIAGNOSTIC TEST [L3 Turbo].)
Monitor the FUEL_PRES PID while idle and race the engine.
Is the FUEL_PRES PID value 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 high pressure fuel pump.
(See FUEL PRESSURE SENSOR INSPECTION [L3 Turbo].)
(See HIGH PRESSURE FUEL PUMP INSPECTION [L3 Turbo].)
Replace the fuel pressure sensor or high pressure fuel pump if necessary.
(See FUEL INJECTOR REMOVAL/INSTALLATION [L3 Turbo].)
(See HIGH PRESSURE FUEL PUMP REMOVAL/INSTALLATION [L3 Turbo].)
6
Verify test results.
•  If normal, return to the diagnostic index to service any additional symptoms.
•  If a malfunction remains, inspect the related Service 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.