26
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EXHAUST SULPHUR SMELL
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DESCRIPTION |
Rotten egg smell (sulphur) from exhaust
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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
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Diagnostic procedure
STEP
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INSPECTION
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RESULTS
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ACTION
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1
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Are any drivability or exhaust smoke concerns present?
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Yes
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Go to the applicable flow chart.
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No
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Go to the next step.
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2
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Inspect the following:
• Electrical connections
• Vacuum lines
• Fuel quality
Are all the items normal?
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Yes
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Go to the next step.
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No
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Service if necessary.
Repeat Step 2.
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3
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Connect the WDS or equivalent to the DLC-2.
Retrieve any continuous memory, KOEO and KOER DTCs.
Are there any DTCs displayed?
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Yes
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DTC is displayed:
Go to the applicable DTC inspection.
(See DTC TABLE.)
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No
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No DTC is displayed:
Go to the next step.
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4
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Install the fuel pressure gauge to the fuel line quick release connector.
Start the engine and run it at idle.
Is the fuel line pressure correct at idle?
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Yes
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Go to the next step.
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No
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Zero or low:
Inspect for clogged fuel line.
If normal, replace the fuel pump unit.
High:
Replace the fuel pump unit.
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5
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Inspect the charcoal canister for fuel saturation.
Is there an excess amount of liquid fuel present in the canister?
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Yes
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Replace the charcoal canister.
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No
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Inspect the fuel tank vent system.
If the fuel tank vent system is normal, suggest trying a different brand since the sulphur content can vary in different fuels.
If the fuel tank vent system is not normal, repair or replace the malfunctioning parts.
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6
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Verify test results.
• If normal, return to the diagnostic index to service any additional symptoms.
• If the malfunction remains, inspect the related Service Information and perform the repair or diagnosis.
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