If the smoking stops after a minute or two, it is most likely caused by oil running down past the valve guide seals when the engine is stopped. Those seals were pretty easy to replace on older domestic engines, but today, especially with import engines, the valves are real deep in the heads and special tools are needed. Some are almost impossible to do without removing the heads from the engine.
Also, if there is a lot of sludge in the engine, the oil drain-back holes could be plugged. That will cause oil to collect up there where it will be much easier for it to leak past the valve guide seals. If this is what is happening, the problem will gradually clear up after a few oil changes at the recommended intervals. The additives wear out, and each oil change introduces new detergents and seal conditioners.
The clue to plugged drain-back holes is the oil level will be considerably higher fifteen minutes after checking it right after stopping the engine.
Monday, January 9th, 2017 AT 12:45 PM