Rough idle…

I've a 1987 5th Avenue, with lean burn gear still attached and working (I hope). Owned since last November. Car has about 101000 miles on it. No issues until about 2 weeks ago when it started idling very rough. The car really shakes.
I replaced distributor cap and rotor and plug wires this morning. Can do plugs today as well. Car starts up fine but still a rough idle. What should I think about next? I am a novice, but willing to learn. Any thoughts?


Glenn
Author: 53ryder