Yes I do see issues with the ignition coils on your truck. The problem is going to be pinpointing the failed coil since they do not always leave fault codes behind but since you have an engine light we should scan it to see if other cylinders are flagged. I can tell you that in most cases in the end all 8 coils are recommended. Go to your local parts store like pepboys or autozone and have them scan for the stored codes as they will do this at no charge. If no codes are stored you have a couple of options. We would need to read the miss fire counts in what is known as Mode 6 data. A more advanced scan tool is needed to view this data so you would need to take it to a shop that had a Snap On scan tool or equivalent. There the miss fire counts can be viewed and those coils swapped out or replaced to rule it out. The other option is the dealer. They have a power balance setup on the Ford tool which will show which cylinders are the cause of the miss then those can be investigated. Lastly you can replace all 8 coils with Ford parts but I would hate for you to do all that without doing some diagnosis.

Yes I would but we need to be careful when replacing the plugs as there were some issues with the plugs and threads.