NO.26 EXHAUST SULPHUR SMELL [ZY, Z6]

id0103b9803200

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 the "BEFORE SERVICE PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this manual.
Caution
•  If there is foreign material on the connecting area of the quick release connector, it might damage the connector or fuel pipe. To prevent this, disconnect the connector and clean the connecting area before connecting.

Diagnostic procedure

STEP

INSPECTION

RESULTS

ACTION
1
Are any drive ability or exhaust smoke concerns present?
Yes
Go to appropriate flow chart.
No
Go to the next step.
2
Inspect 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 WDS or equivalent to DLC-2.
Retrieve any continuous memory, KOEO and KOER DTCs using WDS or equivalent.
Are there any DTCs displayed?
Yes
DTC is displayed:
Go to the appropriate DTC inspection.
(See DTC TABLE [ZY, Z6].)
No
No DTC is displayed:
Go to the next step.
4
Install fuel pressure gauge between the fuel pipe and the fuel distributor.
Start the engine and idle it.
Is fuel line pressure correct during idle?
(See FUEL LINE PRESSURE INSPECTION.)
Yes
Go to the next step.
No
Low: High:
Inspect the fuel line for clogging.
•  If normal, replace the fuel pump unit.
Replace the fuel pump unit.
(See FUEL PUMP UNIT REMOVAL/INSTALLATION.)
5
Inspect the charcoal canister for fuel saturation.
Is excess amount of liquid fuel present in the charcoal canister?
Yes
Replace the charcoal canister.
No
Inspect fuel tank vent system.
•  If 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.