OK STATUS update. i called the customer just to make sure problem hadn't solved it's self nope still problem. so he allowed me a 3hr. window to repair. on the phone. so i drove there, found #4 and #3 coil packs arcing out at the head of each pack. so now unit has 4ct new coil packs. runs like it should except still flashing code 27 and dash lights are flashing off and on. then customer comes out and says closing early today. i just looked at him with those **** off mechanic eyes. and said i'll be back to get code off. i tried the pedal dance and my obd2 reader codes wont clear any ideas? i also removed each coil pack wires to see if it changed operation each one did.