Turbocharger replacement: this is what matters

In terms of construction and function, a turbocharger is designed for the service life of the engine. In practice, however, the high-performance components in the exhaust gas system are subject to diverse risk factors that can lead to premature failure.
The analysis and rectification of the cause of the failure are the prerequisite for a successful repair. Otherwise, the new turbocharger might fail again after a short period of time.

1. Inadequate lubrication
Inadequate lubrication is one of the most frequent causes for turbochargers to fail. If the turbocharger is not sufficiently supplied with oil, damage will occur within a very short time. This is due to the very high speeds of the turbocharger.

2. Contaminated oil
Dirt, soot, fuel, water, combustion residues, or metal abrasion can contaminate the oil. Even the smallest particles in the oil can cause serious damage to the turbocharger due to its extremely high speeds.

3. Oil leakage at turbocharger
If the engine shows signs of increased oil consumption and emits blue smoke, it is imperative that the turbocharger is included in the cause analysis. Important: Oil is forced out of the housing from a turbocharger only if divergent operating conditions predominate in its environment.

4. Foreign object damage
If foreign substances, such as dust, sand, screws, parts of piston rings or valves, and sediments, enter on the intake or exhaust side, this will usually lead to total failure of the turbocharger due to the very high speeds. Damage to the charge air cooler might also be the consequence.

6.  Damage due to excessive exhaust temperatures
Each turbocharger is designed for only a defined temperature range. If this range is exceeded, the turbocharger can fail after just a few seconds.