NO.26 EXHAUST SULPHUR SMELL [L3]

BME010300103264

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 SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual.
(See BEFORE SERVICE PRECAUTION [L3].)
(See AFTER SERVICE PRECAUTION [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 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 WDS or equivalent to the DLC-2.
Retrieve any continuous memory, KOEO and KOER DTCs.
Are there any DTCs displayed?
Yes

DTC is displayed:

Go to the applicable DTC inspection.
No

No DTC is displayed:

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

Zero or low:

Inspect for clogged fuel line.
If normal, replace the fuel pump unit.

High:

Replace the fuel pump unit.
5
Inspect the 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 normal, since sulfur content can vary in different fuels, suggest trying a different brand.
If fuel tank vent system is not normal, repair or replace malfunctioning part.
6
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM.