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

• 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)

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 2.0].)

• 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 2.0].) (See AFTER SERVICE PRECAUTION [SKYACTIV-G 2.0].)

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.

Item (definition)

Unit/Condition

Definition

Condition/Specification (Reference)

FUEL_PRES

KPa , mBar , psi, in H20

Fuel pressure input from fuel pressure sensor

• Displays fuel pressure

V

Fuel pressure sensor voltage

Ignition switched ON (engine off)

• Fuel pressure is approx. 3.6 MPa {37 kgf/cm², 522 psi}: Approx. 1.01 V (ECT is 92 °C {198 °F})

Idle (after warm up)

• Fuel pressure is approx. 3.45 MPa {35.2 kgf/cm², 500 psi}: Approx. 1 V (ECT is 92 °C {198 °F})

Racing (Engine speed is 2,000 rpm)

• Fuel pressure is approx. 3.21 MPa {32.7 kgf/cm², 466 psi}: Approx. 0.96 V (ECT is 86 °C {187 °F})

Racing (Engine speed is 4,000 rpm)

• Fuel pressure is approx. 5.59 MPa {57.0 kgf/cm², 811 psi}: Approx. 1.29 V (ECT is 84 °C {183 °F})

LOAD

%

Ratio of actual amount of intake air to the maximum air charging amount (mass volume) of cylinder

• Idle (after warm up): Approx. 27.05% (ECT is 91 °C {196 °F})

• Racing (engine speed is 2,000 rpm): Approx. 16.86% (ECT is 89 °C {192 °F})

• Racing (engine speed is 4,000 rpm): Approx. 17.64% (ECT is 87 °C {189 °F})

STEP

INSPECTION

RESULTS

ACTION

1

• 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 the evaporative hose between the fuel tank, charcoal canister, purge solenoid valve, and the intake manifold.

  (See EMISSION SYSTEM LOCATION INDEX [SKYACTIV-G 2.0].)

• 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

• 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 the airflow of purge solenoid valve.

  (See PURGE SOLENOID VALVE INSPECTION [SKYACTIV-G 2.0].)

• 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 2.0].)

5

• Inspect the charcoal canister.

  (See CHARCOAL CANISTER INSPECTION [SKYACTIV-G 2.0].)

• 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 2.0].)

No

Remove the fuel injector and visually inspect fuel injector or leakage.

(See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

• If there is any malfunction:

• Replace the fuel injector if necessary.

  (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)

6

Verify the test results.

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

  (See SYMPTOM DIAGNOSTIC INDEX [SKYACTIV-G 2.0].)

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