Howling noise of the turbocharger
STATE
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operation, action
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Some howling noise is normal. Compare with a known good vehicle.
|
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Leak in cooler/tubes/charge air hoses
|
Inspect for leaks in the cooler/tubes/charge air hoses.
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Worn turbocharger bearings
|
Inspect turbocharger bearings. Cm. "Insufficient oil supply to the turbocharger" in this section.
If the turbocharger bearings are worn or damaged, repair or replace the turbocharger.
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Leaks or obstructions in the intake system
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Inspect for leaks or obstructions in the intake manifold.
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Whistling noise from turbocharger
STATE
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operation, action
|
Leaks or obstructions in the air intake
|
Inspect for leaks or obstructions in the turbocharger intake pipes/hoses.
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Leak in cooler/tubes/charge air hoses
|
Inspect for leaks or obstructions in cooler/discharge air tubes/hoses.
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Leaks or obstructions in the exhaust system
|
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Leaks or obstructions in the intake system
|
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Oil leakage in the turbocharger from under the compressor seal
STATE
|
operation, action
|
Important: It is normal for oil to enter the turbocharger air inlet, turbocharger impeller, and charge air cooler system when the positive crankcase ventilation system is closed (PCV). Don't try to fix it. |
|
Air system obstruction
|
Inspect for clogged air cleaner insert or obstruction in the air intake system.
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Obstruction in the exhaust system
|
Inspect for obstructions in the release.
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Leaks in the exhaust system.
|
Inspect for leaks in the exhaust manifold.
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Insufficient oil flow from the turbocharger
|
Inspect the turbocharger oil drain pipe for obstruction.
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Obstruction in the crankcase ventilation system
|
Inspect the crankcase ventilation system for obstruction.
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Wear of internal engine components
|
Inspect for excessive blow-by or engine oil consumption.
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Oil leakage in the turbocharger from under the turbine seal
STATE
|
operation, action
|
Insufficient oil flow from the turbocharger
|
Inspect the turbocharger oil drain pipe for obstruction.
|
Obstruction in the crankcase ventilation system
|
Inspect the crankcase ventilation system for obstruction.
|
Wear of internal engine components
|
Inspect for excessive blow-by or engine oil consumption.
|
Insufficient oil supply to the turbocharger
STATE
|
operation, action
|
Obstruction in the oil supply line
|
Inspect the turbocharger oil supply line for obstruction.
|
Oil leak in the oil supply line
|
Inspect turbocharger oil supply line
|