original engine.
that's it. naw i'm playin.
it all depends. it could be a number of things such as: starter(but that wouldn't kick), fuel pump(but it probably wouldn't start at all then), plugs/wires(damn well, maybe but probably not). does the car run funny? tried a self-diagnostic? pm me and i can tell you how.

ps-just kinda wanted to make a smart comment but i really do wanna help so pm me.