They were iridium but not the top tier ones. The car did this shudder shaking sensation before I did the plugs. I already cleaned out the throttle body and sea foamed the engine . Idles better but this weird mini stroke it has still exists .

 

I was looking for the specific number. I think your car calls for IZFR6K-11 (or -13?) spark plugs. I'm not sure what you mean by top-tier, or what the difference might be. NGK's website probably says something about the actual differences.

 

Hmm I see. Like I said the car had the same symptoms before I even changed the plugs. Also I noticed the other day I started the car and put it reverse right away and it did it and almost seemed like it wanted to stall was odd.

 

It could be a motor mount or mounts going bad. You don’t realize how much vibration they damp until they fail. I know it sounds silly, but it can give the impression the engine is running rough or missing.

They are also pretty easy to inspect/test.

Good luck.

 

Thank you.
Yes that could be it possibly. I changed motor mounts on a 95 jeep last year and did make a big difference for vibration wise.