35k miles spark plugs swap

58k. The miss just started right after the plug change.

 

Plugs are plugs. Unless you got the incorrect application which would ultimately be incorrect heat range. I would actually be more inclined to believe that you have a defective coil, but without getting tracking data on what cylinder may be missing, which will be hard to do if it is super intermittent.

(Mine had one or two stutters this morning almost similar to the same conditions you did.)

 

Picked mine up used a year ago. Finally getting around to changing them today. IDK if previous owner charged them, they were all Denso, but gap was at .060-.065! No wonder I wasn’t getting good mileage. Already feel a difference.

I did have one bad experience. See photo. Denso Iridium was in the photo. Went back and had them give me the
K20HR-U11 (Denso). Thank god I used anti-seize! Simple bump on the tap with palm and base screwed right out of head.

 

I am getting ready to do my plugs for third time (90,000) I have had real good luck with Denzos.