I have removed two of my coil packs on my RX8 and found a grey discolouring on the bottom side. Would you recommend that they be changed for new. I have attached a photo.
Cheers
Les
Looks Like ours did we had poor starting and lack off power :( had the coils changed and all was better. I would say yes change them ASAP and you would really notice the difference.
Hope this helps.