A turbo failure is a rare occurrence as the problems usually stem from other parts of the engine.
Fault fact sheets
There are various reasons why a turbocharger fails. Do bear in mind that turbochargers usually fail because of external problems and not because of the turbocharger itself.
4 Reasons why a Turbocharger Fail:
1. Foreign Object Impact
Compressor Side
- Dirt introduced during installation of turbocharger
- Broken air filter mesh
- Dirty induction system
- Broken air hoses or piping
Turbine Side
- Fractured / broken engine components
- Debris from cracked exhaust manifold
- Debris from broken gaskets
2. Oil Contamination
- Dirt introduced during servicing
- Presence of other fluids inside the engine
- Damaged/worn out internal parts of the engine
- Low quality engine oil and oil filter
- Oil filter bypass valve malfunctioned
- Blocked oil filter
3. Inconsistent Oil Supply
Oil Delay
- Installation of turbo without adequate oil priming
- Restricted or dented oil feed pipe
- Failure to pre-crank the engine at least 3-4 times after installation or long period of non-use
- Immediate high engine speed just after turbo installation or long period of non-use
- Failure to prime oil into oil filter
Oil Starvation
- Use of RTV / gasket glue during installation
- Bent or kinked oil feed pipe
- Carbon deposits or sludge clogged inside oil feed lines
- Sludge or carbon deposits build up at oil strainer inside crankcase
- Oil cooler distorted or blocked (if applicable)
4. Extreme Temperature
- Air piping loose / exhaust gas leaks / broken gaskets
- Back pressure from restricted exhaust system
- Restricted induction system
- Improper calibration of Fuel Injection Pump (F.I.P)
- F.I.P nozzle jammed / leaking
- Actuator malfunctioned / jammed