Why does my 06 dodge caravan buck? on 2006 Dodge Grand Caravan

The van started doing it about a week ago when u take off. i added dry gas thinking thats what it was. no luck.

Asked by for the 2006 Dodge Grand Caravan
It could be many things without being able to experience the problem first hand or being able to do some basic diagnostic tests to check the ignition system or fuel pressure it is hard to say. It could be a bad spark plug or plug wires, I have replaced some fuel injectors on these Caravans but I have also seen a damaged wiring harness for the fuel injectors at the intake manifold at the passenger side of the engine. Wiggling the harness on both cars made the engine run poorly on the two Dodge Caravans I saw this problem on.