Poor engine power
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 engine power
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Faulty spark plug
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Faulty ignition coil assembly
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Faulty knock sensor
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Clogged fuel hoses or pipes
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Malfunctioning fuel pump
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Malfunctioning high pressure fuel pump
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Air drawn in through intake manifold gasket or throttle body gasket
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Check air intake system.
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Engine overheating
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Condition “Engine overheating”
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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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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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Low compression
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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 |
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Malfunctioning air bypass valve
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•Air bypass valve: Turbocharger On-Vehicle Inspection:K14C
•ABV-VSV: ABV-VSV On-Vehicle Inspection:K14C |
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Malfunctioning waste gate valve
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•Waste gate valve: Waste Gate Valve On-Vehicle Inspection:K14C
•WGV-VSV: WGV-VSV On-Vehicle Inspection:K14C |
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Faulty boost pressure sensor
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