Quote Originally Posted by Kevjon View Post
I was driving on the motorway today and all of a sudden the power wasn’t there to accelerate quickly, possibly from the turbo? Not sure. It still builds up speed but lacking the initial power. No white smoke, no whistling from the turbo. Engine still revs to over 4000rpm. Any suggestions would be appreciated.
Any symptoms of clutch slip?

Check the colour of the diesel in the fuel filter: if it's black, it may be contaminated with oil, indicating that the gasket on the tandem pump has failed.