Mazda 3 - 20 Fuel Odor (in Engine Compartment) [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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604
(See FUEL LINE PRESSURE
INSPECTION.)
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
7
Is strong blue spark visible at each
disconnected high-tension lead
while cranking the engine?
Yes
Inspect spark plugs and CMP sensor.
(See SPARK PLUG REMOVAL/INSTALLATION
[LF].)
(See CAMSHAFT POSITION (CMP) SENSOR
INSPECTION [LF].)
No
Inspect following:
• High-tension leads
• Ignition coil and connector
8
Verify test results.
• If normal, return to diagnostic index to service any additional symptoms.
(See ENGINE SYMPTOM TROUBLESHOOTING [LF].)
• 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.
(See PCM REMOVAL/INSTALLATION [LF].)
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) [LF]
B3E010318881W22
20
FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION
Gasoline fuel smell or visible leakage
POSSIBLE
CAUSE
• Excessive fuel pressure
• Purge valve malfunction
• Fuel tank vent system blockage
• Charcoal canister malfunction
• Fuel leakage from fuel system
Warning