My 2016 sorrento v-6 suddenly lost power and smokes huge white clouds constantly

Want crank in the morning and have to hold you gas pedal down and turn a long time for it to start and white smoke come out of it,and clear up in a little while. And it cranks all day long till the next morning...help me please...

Had some white smoke on start-up although there was a lot more this time but it went after a while and then black smoke started coming out if the engine was under load, accelerating in 3rd or 4th. After about 5 miles the revs shot up to about 4k with no throttle with loads of black smoke out the back. They returned to normal after a few seconds and I drove on, set the cruise for about 55mph. Going through a town I had to accelerate from stop. Got into third and it starts revving again work more black smoke. I put it in 4th and dumped the clutch and this brought the revs back down. It died after a couple of seconds and now won't even turn over. I'm not sure if this is terminal or not yet. Anyone have any ideas what might have caused this?