Turbo Premature failure

[morphuk]

Hi, I have just fitted a reconditioned turbo as my other one had failed - fitted the new one and checked the air ducts for any fragments as the damage was done at the intake end - checked air filter etc also done oil and oil filter change.

I have just checked the intake on the newely fitted turbo after about 4 weeks, not even done 500 miles, and the blades are exactly the same as the old one. They have been worn right down - Can I hell think of whats getting in there as its all sealed.

Any advice in what to check for would be appreciated

Citroen Picasso 2.0 HDI

[530dTPhil]

Citroen/Peugeot HDi engines are notorious for this. The first turbo went for a reason, usually lack of oil supply on these engines. The causes can be a loose or partially locked oil pickup pipe in the sump, constricted feed pipe to the turbo or some other reason.

No good sticking a new turbo on, this is merely the effect; you need to identify the real cause of the failure. More dismantling and another turbo required I'm afraid.

[morphuk]

Thanks for the swift reply - but it the air intake end something is hitting the blades and destrying them - all air ducts are cleaned and secured and the air filter is new - how could anything get in there to destroy the blades from the air intake side? https://www.youtube.com/watch?v=go5gS4oC0Ic

530dTPhil said:

Citroen/Peugeot HDi engines are notorious for this. The first turbo went for a reason, usually lack of oil supply on these engines. The causes can be a loose or partially locked oil pickup pipe in the sump, constricted feed pipe to the turbo or some other reason.

No good sticking a new turbo on, this is merely the effect; you need to identify the real cause of the failure. More dismantling and another turbo required I'm afraid.

[530dTPhil]

Are you sure that the bearings haven't failed again and the impeller is then destroying itself on the housing? That's what usually happens.

[morphuk]

It is a possibility, but there is no play in the bearings as of yet.

[530dTPhil]

Difficult to understand how the impeller blades have been 'worn right down' if the bearings are fine. Are there any marks on the throat of the turbo alongside where the impeller runs?

[morphuk]

530dTPhil said:

Difficult to understand how the impeller blades have been 'worn right down' if the bearings are fine. Are there any marks on the throat of the turbo alongside where the impeller runs?

That's what I can't understand myself. No markings on the throat. That's how the last one failed too! On a post further up is a youtube link with my old and new turbo that will show you the extent of the damage.

[530dTPhil]

Sorry, didn't follow the link. Something is obviously getting to the intake impeller and damaging it but I have no idea what. Can only suggest that you dismantle and check the whole intake system from fresh air to the impeller. Very odd.