Poor fuel mileage
Precautions: General safety (00)
Perform troubleshooting referring to the following points when ECM has detected no DTC and no abnormality has been found in Visual Inspection:K14C and Engine Basic Inspection:K14C.
| Condition | Possible Cause | Action |
|---|---|---|
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Poor fuel mileage
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Faulty spark plug (improper gap, heavy deposits and burned electrodes, etc.)
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High idle speed
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Condition “Improper engine idling or engine fails to idle”
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Poor performance of ECT sensor, MAP sensor or MAF sensor
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Faulty electric throttle body assembly
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Faulty APP sensor
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Faulty fuel injector
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Faulty ECM
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Low compression
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Poor valve seating
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Dragging brakes
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Condition “Dragging brakes” in Brake Symptom Diagnosis
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Slipping clutch (M/T model)
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Condition “Slipping” in Clutch System Symptom Diagnosis:K14C-6M/T Model
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Thermostat out of order
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Improper tire pressure
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VVT system out of order
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•VVT actuator: Camshaft and VVT Actuator Inspection:K14C
•Valve timing: Timing Chain and Chain Tensioner Inspection:K14C •OCV oil circuit: Timing Chain Cover Inspection:K14C |