Why Do Turbochargers Fail?

Turbochargers are essential components that can significantly improve engine performance, efficiency, and power. However, like any part of a vehicle, turbochargers are subject to wear and tear and can eventually fail. Understanding the common causes of turbocharger failure can help you prevent issues, extend the lifespan of your turbo, and avoid costly repairs. Below, we explain the most common reasons turbochargers fail and how to prevent them.

1. Lack of Proper Lubrication

Cause:

Turbochargers rely heavily on engine oil to keep their moving parts lubricated and cool. If the oil supply is insufficient or contaminated, it can lead to friction, overheating, and eventual failure of the turbocharger’s internal components.

How to Prevent It:

Regularly check oil levels and quality.
Check the turbocharger’s cooling system regularly.
Ensure that the oil supply lines to the turbocharger are clear and free of blockages.

2. Oil Contamination

Cause:

Contaminants such as dirt, debris, or coolant entering the oil system can damage the turbocharger. These particles can cause wear on the bearings, impellers, and turbine wheels, leading to turbo failure over time.

How to Prevent It:

Always use a high-quality oil filter and replace it as needed.
Make sure the air intake and oil lines are clean and free from debris.
Keep an eye on oil pressure to ensure proper circulation and filtration.

3. Overheating

Cause:

Turbochargers can become extremely hot, especially when the engine is working hard (such as during heavy acceleration or towing). If the turbo isn’t allowed to cool down properly, it can overheat and lead to damage. This is particularly true if the engine is shut off immediately after heavy use, causing the oil inside the turbo to break down.

How to Prevent It:

Allow the engine to idle for a minute or two after heavy driving, allowing the turbo to cool down gradually.
Check the turbocharger’s cooling system regularly.
Ensure the intercooler is functioning properly to cool the compressed air before it enters the engine.

4. Poor Quality or Incorrect Installation

Cause:

Using a low-quality or incorrectly sized turbocharger can lead to improper function and premature failure. Similarly, poor installation practices, such as improper alignment or incorrect connections, can cause a turbo to fail prematurely.

How to Prevent It:

Always purchase a turbocharger from a trusted, reputable source.
Make sure the turbocharger is the correct size and type for your specific engine.
Hire a professional technician for installation to ensure proper setup.

5. Boost Leaks

Cause:

Leaks in the intake or exhaust system can reduce the efficiency of the turbocharger, causing it to work harder and ultimately fail. Leaks allow air to escape before it reaches the engine, reducing power and placing additional stress on the turbo.

How to Prevent It:

Regularly inspect the intake and exhaust systems for cracks, loose hoses, or damaged seals.
Replace any worn or damaged components promptly to prevent leaks from affecting the turbo.

6. Foreign Object Damage (FOD)

Cause:

Turbochargers are sensitive to foreign objects entering the intake system. If dirt, debris, or other foreign objects are sucked into the turbo, they can damage the blades, bearings, or compressor. This can result in decreased performance or total failure.

How to Prevent It:

Regularly inspect and replace air filters to ensure they are clean and functioning properly.
Ensure that the intake system is sealed correctly to prevent debris from entering.
Be mindful of the driving environment; avoid dirt roads or areas with excessive debris.

7. Excessive Exhaust Temperatures

Cause:

Excessive exhaust temperatures can occur if the engine is running too rich or lean, causing the turbo to operate under stress. This can lead to overheating of the turbine and other components, leading to failure.

How to Prevent It:

Maintain the engine’s air-fuel ratio to ensure it is running efficiently.
Regularly check for engine codes or warning lights that might indicate issues with the fuel system or air intake.

8. Failure to Replace a Worn Turbocharger

Cause:

Over time, a turbocharger’s internal parts (such as bearings, seals, and turbine blades) naturally wear out. If the turbocharger is not replaced or remanufactured in a timely manner, it can cause severe damage to the engine or other parts of the vehicle.

How to Prevent It:

Pay attention to signs of turbo failure, such as unusual noises (whining, grinding), loss of power, or excessive exhaust smoke.
Replace a worn or damaged turbocharger promptly to avoid further damage to your engine.

How We Can Help:

By understanding the common causes of turbocharger failure and taking preventative measures, you can extend the life of your turbo and ensure your engine continues to run smoothly and efficiently.

If your turbocharger is showing signs of failure, it’s important to act quickly to prevent more extensive damage. At Iconic Turbos Inc, we specialize in remanufactured turbochargers that are thoroughly tested to meet the highest performance standards. Whether you need a replacement turbocharger or an expert repair service, we have you covered.

Our remanufactured turbochargers provide the same performance as new ones, at a more affordable price, and with the peace of mind of knowing it has been inspected and reconditioned by professionals. Contact us today to learn more about our turbocharger services, or to get a quote for a replacement or remanufactured turbocharger!