Stumbles can be caused by both lean and rich conditions, lean will have white spark plugs, rich will be black scope
I like my clean and lean up twocents
I just remember one of the stock AAR I worked on years ago didn't like cold spark plugs shockwork
What heat range did you install this time?

Last edited by Cab_Burge; 09/18/22 05:23 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)