Studdering issue @ idle
$7.00 can of Sea Foam
$15.00 fuel filter
Put the entire can into 1/4 - 1/2 tank of gas. Run it all out and THEN change the fuel filter.
This will rule out a dirty fuel filter and the Sea Foam should entirely clean your fuel injectors.
Another thing though, that can cause stumbling at low rpm or idling is a problem with a spark plug wire(s). Could be dry rottted, broken, touching a header pipe and arcing or maybe its just starting to break inside. I think the best spark plug wires to buy in place of the high-priced dealership wires is the $36.00 set at Advance Auto. They are just as good as factory wires.

