Could it be a discharged battery?
I didn't drive it for about a month because it was iced in. Tried to start it, and it missed so bad it wouldn't run. Finally the battery wouldn't turn it over. I recharged the battery with a smart charger. Didn't want to start, but I kept my foot in the throttle to keep it running. Finally is smoothed out and idled normally.
After I warmed it up I tried to get it to miss with a low RPM pull. Didn't miss a lick. I haven't had it on the highway yet, but could the problem have been a low battery? The truck sits a lot because its gas mileage is so bad. The battery turned it over slowly when the problem first presented.
