I get an intermittent P0302 #2 cylinder misfire. The engine will run rough, as though a cylinder is misfiring and a check engine light. I can shut off and restart and engine runs fine but code is set. I have changed all the plugs and coils, cleaned contacts etc. What was confusing is it started as a #3 misfire. I swapped coils and it followed. So I replaced that coil. Since then all coils have been replaced and rotated but problem stays on #2. I can clear codes and will run fine but shows up random. Could take days sometime months.