Classichitz

What?

Hey guys new here quick story short I got home the other day and my car was completely flat, I've been having this issue for past month as something is draining my battery, I called a friend over to come jump start my car they ended up cross jumping me witch killed all my reds in my car on my dash wouldn't fire, it blew my main switch, engine control and fuel pump fuse I've replaced all those and so they are sweet, still wouldn't start not sure what's actually happened I took it to a mechanic and he had no idea really either he tested the ecu and everything else everything is working fine just doesn't wanna start, I realize the ignitor has shat its self so I ended up getting another ignitor (2nd hand from fb) seemed algoods I hooked it up took a few cranks to get started but when it did it sounded like it was misfiring and running like shit it kept dying on and off. I came back to it couple hours later and same issue again wouldn't start at all but still turn over. Someone please help I don't know what to do 🙃