NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [L8, LF]

id0103a0802600

20

FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION
•  Gasoline fuel smell or visible leakage.
POSSIBLE CAUSE
•  Excessive fuel pressure
•  Fuel leakage from fuel system
•  Fuel tank vent system blockage
•  Purge solenoid valve malfunction
•  Charcoal canister malfunction
•  PCM malfunction
Warning
The following troubleshooting flow chart contains fuel system diagnosis and repair procedures. Read following warnings before performing 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.
Caution
•  Disconnecting/connecting quick release connector without cleaning it may possibly cause damage to fuel pipe and quick release connector. Always clean 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 for fuel leakage at fuel injector O-ring and fuel line.
Install the fuel pressure gauge between the fuel pipe and the fuel distributor.
Start the engine and idle it.
Measure the fuel line pressure during idle.
(See FUEL LINE PRESSURE INSPECTION [L8, LF].)
Is fuel line pressure correct during idle?
Yes
Go to the next step.
No
Inspect the fuel injector.
(See FUEL INJECTOR INSPECTION [L8, LF].)
If the fuel injector is normal:
•  Replace fuel pump unit.
If the fuel injector has a malfunction:
•  Replace fuel injector.
2
Inspect for blockage/restriction or open circuit in wiring harness between the engine vacuum port and charcoal canister.
Inspect for blockage in the fuel tank vent system.
Is there any malfunction?
Yes
Replace the vacuum hose.
No
Go to the next step.
3
Inspect purge solenoid valve.
(See PURGE SOLENOID VALVE INSPECTION [L8, LF].)
Is there any malfunction?
Yes
Replace the purge solenoid valve.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [L8, LF].)
No
Go to the next step.
4
Connect the M-MDS to the DLC-2.
Perform the KOEO/KOER self test and the DTC Reading Procedure.
(See KOEO/KOER SELF TEST [L8, LF].)
(See ON-BOARD DIAGNOSTIC TEST [L8, LF].)
Are any DTCs present?
Yes
Go to the appropriate DTC inspection.
(See DTC TABLE [L8, LF].)
No
Inspect the charcoal canister for fuel saturation.
(See CHARCOAL CANISTER INSPECTION [L8, LF].)
If the excess amount of liquid fuel is present, replace the charcoal canister.
(See CHARCOAL CANISTER REMOVAL/INSTALLATION [L8, LF].)
5
Verify test results.
•  If normal, return to diagnostic index to service any additional symptoms.
•  If malfunction remains, inspect related Service information perform repair or diagnosis.
―  If vehicle repaired, troubleshooting completed.
―  If vehicle not repaired or additional diagnostic information not available, replace the PCM. (See PCM REMOVAL/INSTALLATION [L8, LF].)