what cause my 2004 kia sorento to blow clouds of black smoke.

1. you're burning oil 2 or you're running a very rich air/fuel misture. running rich means your engine is getting a fuel/air mixture that has too much gas in it. that causes the dirty smoke i think this is what's happening. that's why your car feels like it's clogged. cuz you drove your car like this so long that the black smoked fouled up your catalytic converter and it's not flowing as well anymore. you'll have to replace the catalytic as well as the oxygen sensors, then repair whatever emissions component caused your car to fail and go into "rich mode" in the first place

Sorentos have apparently a PROBLEM with "catastrophic engine failure". Oil out the exhaust suddenly is REALLY bad. That can mean bad rings, gunked up valve covers, clogged or broken oil pump/screen, and or oil forced into places it doesn't belong

My car is blowing out black smoke ,but not using any oil