Hey guys, I have been having trouble getting my car to start. It's a 2006 hyundai tiburon se. I have narrowed the problem down to no spark. However this is extremely odd as I have gotten it to start twice since buying it, both times had an extremely rough idle. I have replaced starter, spark plugs, spark plug wires, checked alternator, checked all fuses. What should I be looking for next? I have been told relay but I just don't know.