pennykmpr

Hey fellas, just got my CL about a week ago. My malfunction light came on and i checked the code by shorting out the ecu thing. It came back code 72, engine misfire in cylinder 2. Im thinking either plug is bad wire is loose (although i checked and it seems fine) and i dont know what else it could be. The only thing i did different today is started filling with premium from BP. O well, any suggestions or comments are greatly appreciated.