Dodge Repair Questions? Ask a Mechanic for Answers ASAP
Hello Jon and welcome to just answer. I have worked on these engines for many years and the # ***** cause of this is that the inside of the spark plug boot gets carbon tracks on it and can cause the spark to travel on the outside of the spark plug to ground and not through the spark plug. That causes missing, back firing, hesitation, etc. What I recommend doing is to remove all 4 spark plugs and look on the spark plug insulator for signs of black marks or black lines. If you see that, then replace the spark plugs and the spark plug wires. I am pretty confident that will fix this bucking.
The only other thing it may be is a fuel pump failing, but that is not nearly as common as what I just mentioned.
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