Why does my 93 Ford Escort idle rough?

Lighthearted

New member
I brought it to a Pepp Boys shop and they did a tune up and other maintenance for 4 hours. But now it idles rough and sounds like it is missing. Should it not idle smoothly? It runs very very well and does not miss when I accelerate. Should I bring it back to them and expect they tune it until it quits missing during idle?
 
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