26 Exhaust Sulphur Smell [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Are there any DTCs displayed?
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING
• If malfunction remains, inspect related Service information perform repair or diagnosis.
3
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION
NO.26 EXHAUST SULPHUR SMELL [Z6]
26
DESCRIPTION Rotten egg smell (sulphur) from exhaust
• Electrical connectors are disconnected or connected poorly
• Charcoal canister malfunction
• Vacuum lines are disconnected or connected improperly.
• Improper fuel pressure
• Poor fuel quality
The following troubleshooting flow chart contains the fuel system diagnosis and repair
procedures. Read the following warnings before performing the fuel system services:
POSSIBLE
CAUSE
Downloaded from
No
EXHAUST SULPHUR SMELL
Warning
• 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.
(See BEFORE SERVICE
(See AFTER SERVICE PRECAUTION.)
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.
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No DTC is displayed:
Inspect the TP sensor for proper adjustment.
[Z6].)
[Z6].)
PRECAUTION.)
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B3E010318881W59