P0300 Dodge - What can i do about a misfire code?

Question

P0300 and P0304 codes.
Was a misfire on cylinder 3, so I swapped coils 3 and 4, code switched to 4, and then replaced number 4
Plugs, injectors, coils good.
Engine light will come on, stay for a few stops and starts, then go away. Happens every few weeks.

Answer 1

P0300 Random misfire

You may have to replace the ignition coil

 Check the ignition coil boot for any burnt or worn marks, this will determine if the misfire is from the boot of the igntion coil