Originally Posted by catmandoo62
if they are not to difficult to get to swap the 8 and 3 coils with other coils.if the problem moves you have your problem if not move on to other options.
Good advice. The coils aren't difficult to swap around and doing so could save buying unnecessary parts. If no change in the way the engine performs simply leave the coils in their new homes and go onto further diagnosis.
If the issue follows the coils to the new cylinders replace the coils.
I would be very leery of cheap coils. Stay with OEM if you need coils and buy only what you need.
"Buy cheap and you'll buy twice"