ive had a tune up and a new spider and new o2 sensors, it still misfires, but this time its after i run through a little of water it seems, took it to the shop and they said pretty much every vaccum line was unplug and the fixed it. It still does it around 1800-3000 rpm, and thats after i run through water (as i mentioned earlier). So i took a spray bottle and sprayed water over the engine to see if it would sputter and it didnt till i move the throttle a bit and it did. I could use a little assistance cause i dont know what to do now. Thanks!!