Hi everybody. My Neice ran her 2014 Encore completely out of oil with the oil light fully on for a few minutes to get home.
Refilled with oil - now the car runs real good on idle but smokes white oil smoke enough to make one think that there is a big fire in the neighborhood.
We replaced the turbocharger in order to eliminate that - it made no difference.
I removed the oil cap and there is a LOT of positive pressure.
Could it be that the pvc system is not working correctly? Should it stop smoking with the oil cap removed?
Should we suspect that it took the oil rings out?
It does have 140 psi compression per cylinder.
Any insight would be much appreciated.

 

I think running on no oil took one or more rings out and that's what's causing the white smoke, but I see you did a compression test and that all cylinders are the same.

My guess is that the valves are scorched. Typically that produces blue smoke more than white, so I'm just guessing here.