ntc-270 cummins white smoke

i have 1982 international day cab with a ntc-270 cummins, it just dont have the power like it use to and last week i went to start it and it blows white smoke like crazy, has a little miss in it around 1800 rpm then if you just dump the throttle on the floor board the smoke turns black. the hose coming off the turbo going to the intake has engine oil running out of it and you cant hear the turbo spool up like you use to could. does anyone know if i'm having injector problems with the white smoke or is there a oil in the turbo gone bad? any help will be greatly appreciated.

 

thanks buddy i appreciate the help