Hey guys I just found out like a week ago my car start to misfire out of no where any idea what could cause the issue?? I changed the spark plus but haven't changed the coil pack you think that could be the problem?? I went to O Reilly's to get it scanned and they said it's a misfire in cyclinder 2&4. Any good idea would help a lot! Just need a good Running car again. It's a 98 Audi A4 Quattro with 240xxxx with a rebuilt top end. That's the only issue that I had with it since I had it so feel free to give i idea guys thanks!