NO.26 EXHAUST SULPHUR SMELL [L3]

BME010300000W28

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 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 REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this manual.
(See BEFORE REPAIR PROCEDURE [L3].)
(See AFTER REPAIR PROCEDURE [L3].)
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
Are any driveability or exhaust smoke concerns present?
Yes
Go to appropriate flow chart.
No
Go to next step.
2
Inspect following:
• Electrical connections
• Vacuum lines
• Fuel quality
Are all items okay?
Yes
Go to next step.
No
Service as necessary.
Repeat Step 2.
3
Connect WDS or equivalent to DLC-2.
Retrieve any continuous memory, KOEO and KOER DTCs.
Are there any DTCs displayed?
Yes

DTC is displayed:

Go to appropriate DTC test.
No

No DTC is displayed:

Go to next step.
4
Install fuel pressure gauge between fuel pipe and fuel distributor.
Start engine and run it at idle.
Is fuel line pressure correct at idle?
Yes
Go to next step.
No

Zero or low:

Inspect for clogged fuel line.
If okay, replace fuel pump unit.

High:

Replace fuel pump unit.
5
Inspect charcoal canister for fuel saturation.
Is excess amount of liquid fuel present in canister?
Yes
Replace charcoal canister.
No
Inspect fuel tank vent system.
If fuel tank vent system is okay, since sulfur content can vary in different fuels, suggest trying a different brand.
If fuel tank vent system is not okay, repair or replace malfunctioning parts.
6
Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM.