the problem started when i was out driving the car started to go jerkily and when i come home and i putted the car in to Park it started to go unevenly and it´s comiing white smoke out of the tailpipeOne or more cylinders is not working. There are many causes of this.
One or more injectors are not working.
One or more sparkplugs aren't firing for a number of reasons (bad wire, bad plug, bad coil)
You could have one or both headgaskets blown.
Is there any steam coming (white smoke)out of the tailpipe?
How and when did the problem start?