1998 Toyota Camry rough idle

Engine problem
1998 Toyota Camry V6 Front Wheel Drive Automatic 133000 miles

My car is idling really rough and stalls out sometimes but when I am on the road and punch it it has no problem getting up to speed, so when its idling its a rough idle and it puffs normal collored smoke out the tail pipe on a cold day. But it should be a steady flow not puff puff. You have any ideas, and it had a code but I was not able to retrieve the code. Also it has had a recent major tune up.