20 Fuel Odor (In Engine Compartment) [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
(See FUEL LINE PRESSURE
INSPECTION.)
Is strong blue spark visible at each
7 disconnected high-tension lead
while cranking the engine?
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.
8
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See PCM REMOVAL/INSTALLATION
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [LF]
20
DESCRIPTION Gasoline fuel smell or visible leakage
• Excessive fuel pressure
• Purge valve malfunction
• Fuel tank vent system blockage
POSSIBLE
• Charcoal canister malfunction
CAUSE
• Fuel leakage from fuel system
Downloaded from
Yes
No
FUEL ODOR (IN ENGINE COMPARTMENT)
Warning
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(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
Inspect spark plugs and CMP sensor.
(See SPARK PLUG REMOVAL/INSTALLATION
[LF].)
(See CAMSHAFT POSITION (CMP) SENSOR
INSPECTION [LF].)
Inspect following:
• High-tension leads
• Ignition coil and connector
[LF].)
[LF].)
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B3E010318881W22