Need some help, I changed the plugs on drivers side and started her up and CEL came on and is misfiring, Plugs are defo in proper and im a bit worried. I have changed plugs on loads of cars and are usually very easy but the Porsche not so, Im wondering if the coils are seated properly. Do the screws seat them properly or do they need a good shove in as im thinking maybe the furthest rear coil didn't pop in and was a little proud when I put the screws back in. Any thoughts?
Thanks

 

Job done!!! Not much skin left on my arms but she's done and feels even better to drive, Misfire was a electric connector plug not seated properly, Not sure if they were the original plugs (Beru) but they looked done anyway, Cleaned all the coils. Noticed 2 of the coils were different part numbers and the seating bolts were harder to get out so think they must be originals too. My exhaust manifolds don't look great right enough so may replace these in the near future. Bone dry underneath regarding oil leaks so that's good.