17 hours ago, ckurtz2 said:

I wonder if for some odd reason these plugs make the car unhappy. 

We use in europe BPR6ES-11  in the L28  you could order 6 new ones it's just a few bucks and test it. But i don't think it solves your problems.. there are a lot things that make a engine run rough..

Google read my mind and placed the video in front of me.  I  added the effort of clicking and wrote some words.
Anyone who tries this must make a video and post it.
 

I tried but the iPhone night vision wasn’t up to the job!

Google read my mind and placed the video in front of me.  I  added the effort of clicking and wrote some words.
Anyone who tries this must make a video and post it.
 

I tried but the iPhone night vision wasn’t up to the job!