NO.26 EXHAUST SULPHUR SMELL [13B-MSP]

id0103f2803200

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 the following warnings before servicing fuel system:
•  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.
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 drivability or exhaust smoke concerns present?
Yes
Go to the applicable flow chart.
(See SYMPTOM DIAGNOSTIC INDEX [13B-MSP].)
No
Go to the next step.
2
Inspect the following:
•  Electrical connections
•  Vacuum lines
•  Fuel quality
Are all the items normal?
Yes
Go to the next step.
No
Service if necessary.
Repeat Step 2.
3
Connect the M-MDS to the DLC-2.
Turn the ignition switch to the ON position (Engine off).
Retrieve any DTCs.
Are there any DTCs displayed?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [13B-MSP].)
No
Go to the next step.
4
Disconnect the fuel line quick release connector and install the fuel gauge to the fuel line.
Start the engine and run it at idle.
Is the fuel line pressure correct at idle?
(See FUEL LINE PRESSURE INSPECTION [13B-MSP].)
Yes
Go to the next step.
No
Zero or low:
Inspect the fuel pump relay and the fuel pump circuit.
Inspect for clogged fuel line.
If normal, replace the fuel pump unit.
(See FUEL PUMP UNIT REMOVAL/INSTALLATION [13B-MSP].)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT REMOVAL/INSTALLATION [13B-MSP].)
5
Inspect the charcoal canister for fuel saturation.
Is there an excess amount of liquid fuel present in the 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 the sulfur content can vary in different fuels.
If the fuel tank vent system is not normal, repair or replace the malfunctioning parts.
6
•  Verify test results.
―  If normal, return to the diagnostic index to service any additional symptoms.
―  If the malfunction remains, inspect the related Service Bulletins and/or the On-line Repair Information and perform the repair or diagnosis.