My car is miss fire when I try to start it

Timing? I work on older cars, and I know the newer ones have ECUs that control all the timing and such, so you could go to any auto store and they will do a plug in that may tell you what’s up. If you can’t get there, see if there’s a timing belt and get a copy of your cars manual. Other than that, if you are working on it and willing to work and learn just keep at it and it will eventually become easy.