My car is sputtering at normal speeds using oil smoking white and smelling like burnt oil. i put new plugs and wires in it. the oil is looking good. not losing any antifreeze. what is wrong with it?

My car is sputtering at normal speeds using oil smoking white and smelling like burnt oil. i put new plugs and wires in it. the oil is looking good. not losing any antifreeze. what is wrong with it?
Could it need a new occur valve