Loss of turbo pressure

On Monday, I pulled out at a junction, I heard a small click noise and had no acceleration out from the junction.

The gear change times were off, the revs were higher than normal.

I can't see any hose issues and I notice a very slight click (or clank) noise when I first pull off from cold. There does seem to be some pressure but that could be just psychological. I can drive ok but there's obviously something wrong.

For the past few months, I've also been laying down a good black smoke screen from the exhaust. I would welcome ideas on that too, I suspect EGR.


Any ideas welcome.