16 High Oil Consumption/Leakage [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
Measure fuel line pressure during
idle.
Is fuel line pressure correct during
idle?
(See FUEL LINE PRESSURE
INSPECTION.)
Remove and shake the PCV valve.
8
Does the PCV valve rattle?
Inspect inside charcoal canister for
fuel saturation.
9
Is excess amount of liquid fuel
present in the charcoal canister?
Visually inspect the exhaust
10 system part. Is there any defective
exhaust system part?
Inspect the three way catalytic
converter.
(See EXHAUST SYSTEM
11
INSPECTION [Z6].)
Is the three way catalytic converter
normal?
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.
12
- If vehicle repaired, troubleshooting completed.
- If vehicle not repaired or additional diagnostic information not available, replace the
PCM.
(See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION
NO.16 HIGH OIL CONSUMPTION/LEAKAGE [Z6]
16 HIGH OIL CONSUMPTION/LEAKAGE
Oil consumption is excessive.
DESCRIPTION
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• If normal, replace fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
High:
Replace fuel pump unit.
(See FUEL PUMP UNIT
REMOVAL/INSTALLATION.)
Go to the next step.
Replace the PCV valve.
Replace the charcoal canister.
Inspect fuel tank vent system.
(See FUEL TANK INSPECTION.)
Then, go to the next step.
Replace the suspected part.
Go to the next step.
Inspect the EGR system.
(See EGR Control System
Replace the three way catalytic converter.
[Z6].)
[Z6].)
- automotive repair manuals website
Inspection.)
B3E010318881W49