Hi all,

My 2009 Octavia 2.0TDI makes a very loud screeching sound when under power which seems to go away when the engine is at full operating temp. If I stop for a few minutes with engine off, it will do it again briefly and then stop again so the engine doesn't need to be completely cold for it to happen.
Anyway, it was due a service so I asked my local mechanic to see if he could see where it was coming from.
On picking up the car, he seemed to think it was coming brom the back of the engine and was air escaping from around a few manifold studs which were apparently broken. Where the manifold and turbo meet?
He has never had to replace these in a 103tdi but being toward the rear of the engine, thought it could be a big job and may require engine removal.
Any one had similar issues? If it is the manifold studs or manifold gasket, what involved in getting this fixed?

Cheers.