turbo or engine

Driving home last night, i lost power and while smoke starting coming from the exhaust, along with a weird noise, so I figured turbo had gone. I pulled over, just as I was doing so, teh engine went nuts and starting running away, was white smoke pouring out the exhaust and it was coming in the...

Ok, the head is off my car at the moment as i the valve stem oil seals have gone along with some play in the guides. This is/has been sorted. Now along with this the rest of the engine has been checked and found wear in the bores. Topped up with diesel and left over 2 nights, on both...