Car messing up again what is it?

My stupid car is messing up again. It does a little spit sputter type thing in between 2-3k rpm and mostly in 1st and 2nd gear. It feels like it's missing and when it does you can hear a little "backfire" type sound out the exhoust. It did this last year when myt dizzy was going out. I replaced the dizzy last year, then a few months later the coil, rotor button, and dizzy cap had to be replaced. Could it be the dizzy again? I have a monster style hood with the cutouts right above the dizzy. Could water have gotten in there and messing with it?