so i had my check engine light on for my ignition coils. did not have a misfire until after i swapped coil packs and spark plugs. did my tune up in my auto class and assumed my buddy didn’t gap the spark plugs right. so then i gapped them to their correct gap and still was getting misfire on cylinders 3&4. whenever i started the car it sounded like it was camming. switched coil 3 with coil 1 to see if that would change the misfire code but it didn’t. it did make the start up nicer tho, didn’t sound like it was struggling to start. took it to firestone and they called me and told me to take it to a volvo specialist. anyone have any ideas on what could be the problem?