Mazda 3 - 16 High Oil Consumption;Leakage [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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596
Measure fuel line pressure during
idle.
Is fuel line pressure correct during
idle?
(See FUEL LINE PRESSURE
INSPECTION.)
• If normal, replace fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
High:
Replace the fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
8
Remove and shake the PCV
valve.
Does the PCV valve rattle?
Yes
Go to the next step.
No
Replace the PCV valve.
9
Inspect for fuel saturation inside
the charcoal canister.
Is excess amount of liquid fuel
present in canister?
Yes
Replace the charcoal canister.
No
Inspect the fuel tank vent system.
Then, go to the next step.
(See FUEL TANK INSPECTION.)
10
Visually inspect the exhaust
system part.
Is there any deformed exhaust
system part?
Yes
Replace the part.
No
Go to the next step.
11
Inspect the threeway catalytic
converter.
(See EXHAUST SYSTEM
INSPECTION [LF].)
Is the threeway catalytic converter
normal?
Yes
Inspect the EGR system.
(See EGR Control System Inspection.)
No
Replace the threeway catalytic converter.
12
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.16 HIGH OIL CONSUMPTION/LEAKAGE [LF]
B3E010318881W18