NO.26 EXHAUST SULPHUR SMELL[AJ (3.0L Duratec)]

• 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 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.

(See BEFORE SERVICE PRECAUTION[AJ (3.0L Duratec)].)

(See AFTER SERVICE PRECAUTION[AJ (3.0L Duratec)].)

STEP	INSPECTION	RESULTS	ACTION
1	• Are any drivability or exhaust smoke concerns present?	Yes	Go to the appropriate flow chart.
No	Go to the next step.
2	• Inspect the following: ― Electrical connections ― Vacuum lines ― Fuel quality • Are all items normal?	Yes	Go to the next step.
No	Service if necessary. Repeat Step 2.
3	• Connect the M-MDS to the DLC–2. • Turn the ignition switch to the ON position (Engine off). • Retrieve any DTCs. • Is “PASSED” displayed?	Yes	No DTC is displayed: • Go to the next step.
No	DTC is displayed: • Go to the appropriate DTC test.
4	• Install the fuel pressure gauge to fuel line. • Start the engine run it at idle. • Measure the fuel line pressure at idle. • Is the fuel line pressure correct? (See FUEL LINE PRESSURE INSPECTION[AJ (3.0L Duratec)].)	Yes	Go to the next step.
No	Zero or low: Inspect the clogged fuel line. • If the normal, replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION[AJ (3.0L Duratec)].) High: Replace the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)
5	• Inspect the charcoal canister for fuel saturation. • Is the excess amount of liquid fuel present in canister?	Yes	Replace the charcoal canister.
No	Inspect fuel tank vent system. • If the fuel tank vent system is normal, since sulfur content can vary in different fuels, try a different brand. • If the fuel tank vent system is not normal, repair or replace the malfunctioning part.
6	• Verify the test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If malfunction remains, inspect related Service Information and perform repair or diagnosis. • If vehicle is repaired, troubleshooting completed. • If vehicle is not repaired or additional diagnostic information is not available, replace the PCM.

STEP

INSPECTION

RESULTS

ACTION

• Are any drivability or exhaust smoke concerns present?

Yes

Go to the appropriate flow chart.

Go to the next step.

• Inspect the following:

― Electrical connections

― Vacuum lines

― Fuel quality

• Are all items normal?

Yes

Go to the next step.

Service if necessary.

Repeat Step 2.

• Connect the M-MDS to the DLC–2.

• Turn the ignition switch to the ON position (Engine off).

• Retrieve any DTCs.

• Is “PASSED” displayed?

Yes

No DTC is displayed:

• Go to the next step.

DTC is displayed:

• Go to the appropriate DTC test.

• Install the fuel pressure gauge to fuel line.

• Start the engine run it at idle.

• Measure the fuel line pressure at idle.

• Is the fuel line pressure correct?

(See FUEL LINE PRESSURE INSPECTION[AJ (3.0L Duratec)].)

Yes

Go to the next step.

Zero or low:

Inspect the clogged fuel line.

• If the normal, replace the fuel pump unit.

(See FUEL PUMP UNIT REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)

High:

Replace the fuel pump unit.

(See FUEL PUMP UNIT REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)

• Inspect the charcoal canister for fuel saturation.

• Is the excess amount of liquid fuel present in canister?

Yes

Replace the charcoal canister.

Inspect fuel tank vent system.

• If the fuel tank vent system is normal, since sulfur content can vary in different fuels, try a different brand.

• If the fuel tank vent system is not normal, repair or replace the malfunctioning part.

• Verify the test results.

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

― If malfunction remains, inspect related Service Information and perform repair or diagnosis.

• If vehicle is repaired, troubleshooting completed.

• If vehicle is not repaired or additional diagnostic information is not available, replace the PCM.

26	Exhaust sulphur smell
DESCRIPTION	• Rotten egg smell (sulphur) from exhaust
POSSIBLE CAUSE	• Electrical connectors are disconnected or connected poorly. • Charcoal canister malfunction • Vacuum lines are disconnected or connected improperly. • Improper fuel pressure • Poor fuel quality 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 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. (See BEFORE SERVICE PRECAUTION[AJ (3.0L Duratec)].) (See AFTER SERVICE PRECAUTION[AJ (3.0L Duratec)].)