I have a renault laguna 1.9 DCI. I advertised it for sale, but decided to get it fixed.

Anyway, the turbo had gone, so had it replaced and the turbo seems fine. But now the car seems a little louder and vibrates like mad when idling.

Also it feels quite sluggish, the turbo's not as good as it was when my old one was working.

Any thoughts?

if it was pushing oil in to the manifold it might have hydraliced and jumped a tooth on the belt could even have bent a con rod or valves