Lost power, over revved and went bang. Lots of white and black smoke and stopped.

Found turbo shaft has snapped. Removed faulty turbo and fitted a new turbo.

Connected everything, topped up coolant and started bleeding cooling system. The vehicle has started to pick up revs after 2 minutes of running and then all of a sudden revved and started blowing white smoke then kept revving up and only stopped once I stalled the vehicle.