T5 plug removal

A couple of evenings back I decided to check on the condition of the cool packs and spark plugs.
After removing the turbo pipe and engine cover I found pools of oil on the rocker cover, then also down in the spark plug holes.
I cleaned up the oils check on the ploughs and refitted. Started the engine to a cloud of white smoke, I guess some of the oil got down in to the combustion chambers!