Turbocharger Faults

If your turbocharger fails, it is essential to look at possible causes rather than just a replacement Turbocharger.

 

The three main turbo killers

 

When analysing possible turbo-charger problems it is important to note that turbochargers are very reliable, less than 1% of turbos fail due to a manufacturing fault with the turbo itself.

 

Nearly all turbo failures are because of problems with:

  • Oil starvation
  • Oil contamination
  • Foreign object damage

 

Before you fit a new turbo, find out what caused the first unit to fail
or you risk the replacement failing too.

 



Common Faults

This is example of a CHRA from a Peugeot 1.6HDi, the housing on the left is new, the housing on the right was fitted to an engine and ran for approximately two minutes, however, the fitting guide we supply was not followed resulting in severe carbon build up.

 

 

Silicon sealant issues

 

 

Carbon Build up on Vanes

 

 

Severe Oil and Carbon Contamination

 

 

Light impact damage to compressor wheel

 

 

Heavy impact damage to compressor wheel

 

 

Heat damage from oil starvation

 

 

Shaft damage from oil contamination, bevelled shaft and scoring

 

 

The most common cause for turbocharger failure is oil contamination. This can happen through numerous reasons within the engine itself:

 

  • Worn engine parts.
  • Carbon build up within the engine or breathers.
  • Paint or coatings within the rocker box.

 

You may also have issues shortly after a service due to oil changes breaking down particles within the engine and/or impact damage from debris falling into pipework etc.

 

All of this needs to be looked into when replacing a turbocharger.

 

If one turbo fails it could just be an issue with the turbocharger.

 

If two turochargers fail it is almost certainly an issue with the engine oil or fitting process.

 

In the case of more Turbochargers failing on the same engine then this is indicates a serious problem with the engine and nothing to do with the turbocharger.

 

We always ask what problems if any you may have had in the run up to the turbocharger failing, this is to help our customers pinpoint any potential issues beforehand and to advise of any special requirements in replacing the new turbocharger.

Interested?

We're always happy to provide any additional assistance with possible faults on your existing turbocharger. Contact us on 0845 1222615 or use our contact form.