Symptom Chart
WARNING: This page is about a different car, the 2019 Ford F-550 Super Duty, 2019 Ford F-450 Super Duty, 2019 Ford F-350 Super Duty, and 2019 Ford F-250 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
| Symptom | Possible Sources | Action |
|---|---|---|
| Loss of power/performance | Clogged air cleaner element | INSTALL a new air cleaner element. TEST the system for normal operation. |
| Restriction upstream of the turbocharger compressor | REMOVE the restriction. | |
| Partially blocked charge air cooler (engine oil) | REPAIR the charge air cooler. INSTALL a new charge air cooler. TEST the system for normal operation. |
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| Damaged charge air cooler | INSTALL a new charge air cooler. TEST the system for normal operation. |
|
| Low compression | REPAIR as needed. | |
| Turbocharger compressor air intake hoses leaking | REPAIR or INSTALL new hoses or clamps as needed. | |
| Loose connections or damage to air intake hoses and tubes | TIGHTEN the hose clamps. INSPECT for damage. REPAIR as needed. |
|
| Malfunctioning fuel system | Refer to the appropriate Engine Controls article(s). | |
| Poor fuel quality | DRAIN the fuel. FILL with fresh fuel. |
|
| Engine wear (piston rings, valve guides) | REPAIR as needed. | |
| Turbocharger turbine or compressor wheel damage | INSPECT the turbocharger. REFER to Check for Free Rotation -- On Vehicle |
|
| Turbocharger bearings seized | INSTALL a new turbocharger. TEST the system for normal operation. |
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| Damaged exhaust or exhaust leaks at the turbocharger inlet pipes | INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as needed. |
|
| Turbocharger actuator not functioning | TEST the turbocharger actuator operation. Refer to the appropriate Engine Controls article(s). | |
| PCM (powertrain control module) -- DTC (diagnostic trouble code) | REFER to: Electronic Engine Controls . | |
| Restricted flow through the EGR cooler due to coolant intrusion | REMOVE the EGRT cooler outlet temperature sensor. INSPECT for signs of coolant. If coolant is present, REMOVE the EGR cooler and pressure test. INSPECT for blockage or coolant intrusion. REPAIR as needed. |
|
| Symptom | Possible Sources | Action |
|---|---|---|
| Excessive oil consumption (blue or gray exhaust smoke) | Incorrect type or grade of oil Excessive oil level |
DRAIN the oil. FILL with the specified oil. |
| Extended oil change intervals | CHANGE oil as recommended. | |
| Oil in exhaust manifold | REPAIR as needed. | |
| Clogged air cleaner element | INSTALL a new air cleaner element. TEST the system for normal operation. |
|
| Restriction upstream of the turbocharger compressor | REMOVE the restriction. | |
| Restricted closed crankcase ventilation (CCV) system | INSPECT the closed crankcase ventilation (CCV) system. REPAIR as needed. |
|
| Blocked or restricted turbocharger oil drain | INSPECT the turbocharger oil drain. REPAIR as needed. |
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| Damaged or collapsed air intake hoses and tubes | TIGHTEN the hose clamps. INSPECT for damage. REPAIR as needed. |
|
| Damaged exhaust or exhaust leaks at the turbocharger inlet pipes | INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as needed. |
|
| Turbocharger oil seals leaking | REFER to Turbocharger Internal Oil Leak Test | |
| Turbocharger top oil plug leaking | REPAIR as needed. | |
| Turbocharger actuator oil leak | INSTALL a new turbocharger actuator. | |
| Turbocharger to pedestal gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
|
| Turbocharger pedestal to engine block gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
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| Damaged or restricted crankcase ventilation system | Visually INSPECT the crankcase ventilation system. REPAIR as needed. |
|
| Symptom | Possible Sources | Action |
|---|---|---|
| Excessive coolant consumption (white exhaust smoke) or leaks | Turbocharger coolant tube seals and/or coolant tube leaking | Visually INSPECT the turbocharger coolant return tube and the turbocharger coolant tube seals/gaskets, hose and clamps. REPLACE the turbocharger coolant return tube and the turbocharger coolant tube seals/gaskets, hose and clamps as needed. |
| Turbocharger side cup plug failure | INSTALL a new turbocharger. TEST the system for normal operation. |
|
| Turbocharger to pedestal gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
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| Turbocharger pedestal to engine block gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
|
| Symptom | Possible Sources | Action |
|---|---|---|
| Noise or vibration | Loose connections or damage to air intake hoses and tubes | TIGHTEN the hose clamps. INSPECT for damage. REPAIR as needed. |
| Air leaks at the intake manifold or the charge air cooler | REPAIR as needed. | |
| Leaks at turbocharger inlet and outlet connections | REPAIR as needed. | |
| Exhaust leaks at the turbocharger housing, the exhaust manifolds or the turbocharger inlet pipes | INSPECT for leaks. Leaks can usually be detected audibly or visually, by a discoloration caused by escaping hot exhaust gases. REPAIR as needed. |
|
| Turbocharger imbalance due to foreign object/damage | REPAIR as needed. | |
| Turbocharger compressor housing seals | INSTALL a new turbocharger. TEST the system for normal operation. |
|
| Leak in exhaust system before the diesel particulate filter | REPAIR as needed. | |
| Carbon build up in the turbine housing causing contact with turbine wheel | REFER to Check for Free Rotation -- On Vehicle | |
| Symptom | Possible Sources | Action |
|---|---|---|
| Engine emits excessive smoke (black/blue/white) | Clogged air cleaner element | INSTALL a new air cleaner element. TEST the system for normal operation. |
| Incorrect type or grade of oil | DRAIN the oil. | |
| Blocked or restricted turbocharger oil drain | INSPECT the turbocharger oil drain. REPAIR as needed. |
|
| Damaged/restricted or leaking turbocharger compressor air intake pipe | REPAIR or INSTALL a new pipe as needed. | |
| Engine wear (piston rings, valve guides) | REPAIR as needed. | |
| Plugged crankcase ventilation system | INSPECT, visually the crankcase ventilation system. REPAIR as needed. |
|
| Turbocharger oil seals leaking | REFER to Turbocharger Internal Oil Leak Test | |
| Symptom | Possible Sources | Action |
|---|---|---|
| High boost | Leak in exhaust system before the DPF | REPAIR as needed. |
| Symptom | Possible Sources | Action |
|---|---|---|
| External coolant leaks or coolant tube leaks | Turbocharger coolant tube seals and/or coolant tube leaking | INSPECT, visually the turbocharger coolant return tube and the turbocharger coolant tube seals/gaskets, hose and clamps. REPLACE the turbocharger coolant return tube and the turbocharger coolant tube seals/gaskets, hose and clamps as needed. |
| Turbocharger side cup plug failure | INSTALL a new turbocharger. TEST the system for normal operation. |
|
| Turbocharger to pedestal gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
|
| Turbocharger pedestal to engine block gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
|
| Symptom | Possible Sources | Action |
|---|---|---|
| External turbocharger oil leaks | Turbocharger top oil plug leaking | REPAIR as needed. |
| Turbocharger actuator oil leak | INSTALL a new turbocharger actuator. | |
| Turbocharger to pedestal gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
|
| Turbocharger pedestal to engine block gasket failure | INSTALL a new turbocharger to pedestal gasket. TEST the system for normal operation. |
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