92 SC400 Smokes at start
 

Hey folks this is my first post. I've recently gotten a 1992 SC400. Its got about 120,000 miles on it. it drives like a dream but the car lets out a good bit of smoke when I first start it up as it idles. What would be the likely cause of this? It doesnt seem to be burning oil at a noticable rate.
Thanks a lot.