NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [SKYACTIV-G 2.5T]

id0103q4802600

20

FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION
•  Gasoline fuel smell or visible leakage.
POSSIBLE CAUSE
•  Missing or loose fuel filler cap
•  Fuel filler cap malfunction (seal malfunction)
•  Fuel leakage from fuel system
•  Charcoal canister damage
•  Vacuum hose (disconnection, damage) between charcoal canister and purge solenoid valve
•  Vacuum hose (disconnection, damage) between purge solenoid valve and check valve
•  Vacuum hose (disconnection, damage) between check valve and intake manifold
•  Vacuum hose (disconnection, damage) between check valve and ejector
•  Vacuum hose (disconnection, damage) between ejector and intake manifold
•  Evaporative hose (disconnection, damage) between fuel tank, charcoal canister, purge solenoid valve, and intake manifold
•  Fuel leakage at the fuel injector
•  Purge solenoid valve malfunction (stuck, operation malfunction due to open circuit)
•  Ejector (clogged)
•  Check valve (stuck)
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.
?  Highly pressurized fuel may spray out if the fuel line is cut. Due to the following dangers occurring with a fuel spray, always complete the “Fuel Line Safety Procedure” to prevent the fuel from spraying. (See BEFORE SERVICE PRECAUTION [SKYACTIV-G 2.5T].)
•  Fuel may cause irritation if it comes in contact with skin and eyes.
•  If fuel ignites and causes a fire, it may lead to serious injury or death, and damage to property and facilities.
?  Fuel is highly flammable and dangerous. Fuel line spills and leakage can cause serious injury or death, and damage to equipment. Always refer to the “Quick Release Connector Removal/Installation (fuel system)” before performing the fuel hose installation, and execute the “Fuel Leakage Inspection” after installation. (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].) (See AFTER SERVICE PRECAUTION [SKYACTIV-G 2.5T].)
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
INSPECT FOR MISSING OR LOOSE FUEL FILLER CAP
•  Visually inspect if the fuel filler cap is missing or loose.
•  Is there any malfunction?
Yes
Repair or replace the fuel filler cap.
No
Go to the next step.
2
INSPECT EVAPORATIVE HOSE CONNECTION
•  Inspect the evaporative hose between the fuel tank, charcoal canister, purge solenoid valve, ejector, check valve and the intake manifold.
•  Is there disconnection in the evaporative hose or damage?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
3
INSPECT FUEL SYSTEM FOR FUEL LEAKAGE
•  Visually inspect the fuel leakage at the fuel line.
•  Is there any leakage?
Yes
Repair or replace the malfunctioning part according to the inspection results.
No
Go to the next step.
4
INSPECT PURGE SOLENOID VALVE
•  Inspect the airflow of purge solenoid valve.
•  Is the purge solenoid airflow properly?
Yes
Go to the next step.
No
Replace the purge solenoid valve.
(See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
5
INSPECT CHARCOAL CANISTER
•  Inspect the charcoal canister.
•  Is there cracking or damage in the charcoal canister?
Yes
Repair or replace the malfunctioning part according to the inspection results.
(See CHARCOAL CANISTER REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
No
Remove the fuel injector and visually inspect fuel injector or leakage.
(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.5T].)
•  If there is any malfunction:
?  Replace the fuel injector if necessary.
6
Verify the 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, replace the PCM.