What could this be?
Lately every once in a while the car would start and run a little rough and I would hear some popping in the exhaust. I would sit in the car and rev it to about 2k for 30 seconds and the problem would go away. It would not happen once the car was warm and it would not happen all the time on start up either. I was thinking a coil was binding up or something. Today driving along the shifter starts shaking badly again and im definitely down a cylinder again.
Off the top of my head I'm tempted to go out and buy an MSD coil set with wires but what do you guys think? Should I do that or wait for a proper diagnosis at the end of the week?

