Symptom Chart

SYMPTOM CHART

Condition	Possible Sources	Action
Loss of power/performance	Clogged Air Cleaner (ACL) element Loose connections or damage to air intake hoses and tubes Malfunctioning fuel system Poor fuel quality Engine wear (piston rings, valve guides) Turbocharger turbine or compressor wheel damage Damaged exhaust or exhaust leaks at turbocharger housing or exhaust manifolds Malfunctioning turbocharger bypass valve Obstructed wastegate actuator linkage Damaged wastegate actuator linkage Wastegate actuator operation PCM - DTCs	INSTALL a new ACL element. Refer to INTAKE AIR DISTRIBUTION & FILTERING . TEST the system for normal operation. TIGHTEN the hose clamps. INSPECT for damage and REPAIR as necessary. REFER to the INTRODUCTION - GASOLINE MODELS . DRAIN and FILL with fresh fuel. REPAIR as required. INSPECT the turbocharger. REFER to the CHECK FOR FREE ROTATION - OFF VEHICLE . INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as required. REFER to the INTRODUCTION - GASOLINE MODELS . INSPECT the suspect turbocharger wastegate linkage for obstruction. REPAIR as necessary. INSPECT the suspect turbocharger wastegate linkage for damage. INSTALL a new turbocharger. TEST the wastegate actuator operation. REFER to the INTRODUCTION - GASOLINE MODELS . REFER to the INTRODUCTION - GASOLINE MODELS .
Excessive oil consumption	Incorrect type or grade of oil Oil in exhaust manifolds Clogged ACL element Blocked or restricted turbocharger oil drain pipes Damaged or collapsed air intake hoses and tubes Turbocharger oil seals leaking Damaged crankcase ventilation system	DRAIN and FILL with specified oil. REPAIR as required. INSTALL a new ACL element. Refer to INTAKE AIR DISTRIBUTION & FILTERING . TEST the system for normal operation. INSPECT the turbocharger oil drain pipes. REPAIR as necessary. TIGHTEN hose clamps. INSPECT for damage and REPAIR as necessary. Damaged exhaust or exhaust leaks at turbocharger housing or exhaust manifolds INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as required. REFER to TURBOCHARGER INTERNAL OIL LEAK TEST . Visually INSPECT the crankcase ventilation system.
Excessive noise	Turbocharger compressor air intake pipe leaking Loose connections or damage to air intake hoses and tubes Air leaks at turbine housing, blown joints or damaged exhaust Carbon build up in the turbine housing causing contact with turbine wheel Turbocharger imbalance due to foreign object/damage Turbine bearing failure Inoperative turbocharger bypass valve	REPAIR or INSTALL a new pipe as required. TIGHTEN hose clamps. INSPECT for damage and REPAIR as necessary. INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as required. INSPECT the turbocharger. REFER to the CHECK FOR FREE ROTATION - OFF VEHICLE . REPAIR as required. INSPECT the turbocharger. REFER to the CHECK FOR FREE ROTATION - OFF VEHICLE . REFER to the INTRODUCTION - GASOLINE MODELS .
Engine emits excessive smoke (black/blue/white)	Clogged ACL element Incorrect type or grade of oil Blocked or restricted turbocharger oil drain pipes Damaged/restricted or leaking turbocharger compressor air intake pipe Engine wear (piston rings, valve guides) Plugged crankcase ventilation system Turbocharger oil seals leaking	INSTALL a new ACL element. Refer to INTAKE AIR DISTRIBUTION & FILTERING . TEST the system for normal operation. DRAIN and FILL with specified oil. INSPECT the turbocharger oil drain pipes. REPAIR as necessary. REPAIR or INSTALL a new pipe as required. REPAIR as required. Visually INSPECT the crankcase ventilation system. REFER to TURBOCHARGER INTERNAL OIL LEAK TEST .