95 Jetta Idle problem

Someone please help me, about a month ago my jetta started idling eraticaly, and stalling when I stop and going down hill(my foot off the gas)
Ive checked the vaccum lines, replace the spark plugs, air filter and the cadlitic converter.
Its also smoking when I start it up in the mornings (white smoke) and hard to keep started any ideas?
email me directly at [email protected]
and thanks in advanced

Start by checking the obvious.........make sure all 4 cylinders are firing. If one of the cylinders is missing alot or not firing then you can tell by systematically removing the spark plug wires from the distributor. Disconnecting the spark plug wire on a good cylinder will cause the idle to change dramatically. If you disconnect one of the wires and have little or no change in idle then you have isolated your problem. Then you have to figure out if it is a clogged injector or perhaps its not getting a spark. Hope this helps.

Is it white smoke or steam?

Did you check the idle control motor? I had a cadillac with that problem.