These are notorious in the trade,
and the web!
I'll give the most common fault first,
and the most expensive.
it's a little complex,
basically a leaking injector seat lets combustion gas leak back into the engine oil contaminating it with carbon,
this builds up until it blocks the oil feed filter in the turbo oil feed pipe,
result being a failed turbo bearing.
which sound very much like your is beginning to fail/
And that's not the bad news,
not only does this need a new turbo it also needs the entire engine stripped and cleaned,
new oil pick up in the sump and new turbo oil feed pipe and filter,
That's the worst it could be,
the best would be a failed turbo pressure sensor or the associated pipes.
So first step is have the turbo internals inspected.
if it's shot there's usually a hell of a lot of oil in the turbo induction duct.
Posted on Monday 7th of September 2015Don't understand this? Ask a question