1996 Plymouth Voyager

Engine Performance problem
1996 Plymouth Voyager 6 cyl Two Wheel Drive Automatic

at idle its wanting to buck and wants to stall [almost 400rpm drop put foot on pedal it willact like no fuel and lots of air then will pop pop pop then kick in and do this at a faster pace then when up to speed and you let up on the pedal it will lurch and smooth out if you accelerate after this theres rapid pinging then seems to go smoother at higher speeds cause your lighter on the pedal with slowing comes that cycle again ithought it might be water in the tak so I used drying agent at low fuel capacity and nothing changed thanks frank