I knocked a huge hole in my distributor cap so I can watch the position of the rotor while the engine is running.
I can see the spark leaving the tip of the rotor and going to the distributor cap terminal, that spark was moving side to side, left to right.
Wasn’t consistently firing in the center to the distributor cap terminal.
At first I thought polarity issue but I traced my pick up coil wires back to my msd box and they are correct.
So it just has me confused as to why it wouldn’t be consistent every time it passed that cap terminal.
If this site would let me load the video you’d see exactly what I’m talking about .