my car is at the mechanics right now with the SES light on. the code is kicking back that the ignition coil is misfiring but they dont know which one. ive already had 2 replaced before and i know they are different from the first coils. i dont wanna replace all 6 just to find the 1 bad one. When the light first came on, the car shuttered and then it stopped and so far, it has driven fine. Is there a way to physically tell the new coils from the old ones? Thanks.

 

new coils have a white DOT on them... lemme find a picture of my engine with those installed.