so the history...83 305 topped with a rochester qjet. it has recently had new plugs wires, rotor, cap, fuel pump and filter.
i drove the car to work the other day running great, i parked it and shut it down like normal. a buddy showed up and wanted to see it and hear it run so i started it and it idled for about five minutes or so. shut it down again. about three hours later i came out after work and went to drive home, the car ran rough and lacked power along with the engine slightly rocking side to side as if a cylinder was not firing. i have checked timing, which seems to be fine, the vacuum is pulling 15in hg, and also it smells like i have raw gas coming from the tailpipe. i changed the rotor yesterday and it ran good for about ten minutes before it stalled out and began all over again. just now i cant get it to run smoothly like it used to or with any power. does anyone have a suggestion? any help would be greatly appreciated. i also did a little researcha and a haynes manual says that the egr may have something to do with running rough, can anyone confirm this? at the time my egr had no vacuum running to it

 

Did it get new spark plugs with the wires? I would pull the plugs and look at them. Any that are off color from the rest are the cylinders that I would run a compression check on.