I replaced the coil 3 times now and I am getting sick of this.
When I replace the coil it goes away for a bit but comes back.

Is there something else I should check to see why this happens.
Plug looks good
Thanks

 

Swap coil with another cylinder see if misfire follows the coil. If not try new spark plug. And if that does not fix it it time for a fuel pressure test and then compression check on that cylinder. You also could try swapping a injector with another cylinder before the compression test. There is even a possiblity of a bad wire/ECM.

 

I was going to say did you ever replace the spark plug in that cylinder because even though it looks good, it could be not firing correctly and be fouled. Like troy said, try swapping an injector as well to make sure the injector is firing correctly.

If you swap the injector, change the plug, and it's still doing it then you have a frayed wire going to that coil pack and needs to be traced and replaced.

 

+1

All great ideas!