I have a check engine light that is on in my car that shows code po302 which is a cylinder 2 misfire when you're driving the car it runs great when you're going down the road the engine light will start flashing for just a few seconds and then it goes off and starts running great again I'm trying to figure out what it could be I've done ruled out plugs and coil packs I don't think it's a bit valve or a broke spring so was curious what else it could possibly be maybe a fuel injector maybe a mass air flow sensor if I could please get some help with this or if you've had the same problems please let me know I'm needing to get this repaired quickly

 

Are you getting any other codes possibly from the converter?
The reason I ask is , the flashing c/e lite is trying to tell it is not only misfiring , but polluting too. At this point we don't know if it is spark related or fuel related. I don't believe it is mechanical at this time because it is intermittent.
Can you provide the entire story of what the original problem was and everything you tried so far.