I HAVE A FORD GALAXY GHIA X TD AUTO DIESEL?

IT WAS NOT RUNNING RIGHT SO A MECHANIC LOOKED AT IT AND THE TURBO PIPE HAD POPPED OF IT WAS PUT BACK ON. THE CAR WAS DUE A SERVICE SO WE TOPPED UP BREAK FLUID, OIL ETC AFTER 10 MINUTES OF DRIVING THERE WAS A BURNING SMELL AND A HUGH FOG OF DARK GREY SMOKE BEHIND US.
WE CALLED THE AA OUT WHEN THEY CHECKED THE OIL IT WAS EMPTY ALSO THE TUBE TO THE TURBO HAD COME BACK OFF THEY PUT THE PIPE BACK ON WITH CABLE TIES SO WE COULD GET HOME AND TAKE IT TO A GARAGE. IT HAS LOST POWER AND JUST CREAPS ALONG I HAVE NOT DRIVEN IT SINCE.
HAVE YOU ANY IDEA WHAT HAS HAPPENED

STACEY
January 2008