NO.26 EXHAUST SULPHUR SMELL[LF, L3]

id0103b2803200

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.
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 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.
Retrieve any continuous memory, KOEO and KOER DTCs using M-MDS.
Are there any DTCs displayed?
Yes
DTC is displayed:
Go to the appropriate DTC inspection.
(See DTC TABLE[MTX, LF ATX (FS5A-EL)].)
(See DTC TABLE[LF ATX (FN4A-EL), L3 ATX].)
No
No DTC is displayed:
Go to the next step.
4
Install the fuel pressure gauge between fuel pipe and fuel distributor.
Start engine and run it at idle.
Is fuel line pressure correct at idle?
(See FUEL LINE PRESSURE INSPECTION[LF, L3].)
Yes
Go to the next step.
No
Low:
Inspect the fuel line for clogging.
•  If there is no malfunction, replace the fuel pump unit.
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT REMOVAL/INSTALLATION[LF, L3].)
5
Inspect the charcoal canister for fuel saturation.
Is excess amount of liquid fuel present in canister?
Yes
Replace the charcoal canister.
No
Inspect the fuel tank vent system.
•  If the fuel tank vent system is normal, suggest trying a different brand since sulfur content can vary in different fuels.
•  If the fuel tank vent system is not normal, repair or replace the malfunctioning part.
6
Verify test results.
•  If normal, return to diagnostic index to service any additional symptoms.
•  If malfunction remains, inspect related Service information perform repair or diagnosis.
―  If vehicle repaired, troubleshooting completed.
―  If vehicle not repaired or additional diagnostic information not available, replace the PCM.