Yes, it is using crankcase oil. About a quart every couple hundred miles (Stopped driving it since problem developed).

It didn't use oil at all between changes, this was a sudden change.

By the engine speeding up by itself I mean the car was stopped, facing downhill, and without having the pedal depressed at all, the engine starts running faster by itself and blowing smoke.

The return line from the pump is clear plastic. A stream of little white bubbbles can be seen; more fuel, more white bubbles.

I'm not as concerned about the air, that we can probably figure out; the oil consumption is what has me losing sleep.

Let me know if that's not clear or for more info...

Thanks!