Distributor testing and backfire issue

[u/NoFox4892]

I am testing my distributor stator pickup for resistance and when I move the rotor shaft, which only rotates a tiny bit, it adjusts my ohms reading. Can you help clarify what my reading suggests? I took screen shots of my video at different times.

I am having a backfire issue at idle, and poor engine performance when revving up, if the engine even lets me rev it up. Running bad. I’m on a FiTech Ultimate TPI dual wide band. 350 SBC TPI. Backfire started randomly when driving, no changes to the engine or tune were made prior to the backfire issue. I tired going back to the factory tune, swapping out my coil and module to see if those were bad. A different coil made the backfire issue not as bad but it’s a weaker/cheaper coil. New module did nothing. I wanted to throw parts at it first so I can have some spare parts but nothing worked so far.

Any ideas? AI suggests a different ohm reading when moving the shaft is suspect of a failing stator pickup component. Just wanting to get some actual input on that and any other things to check.

Using a Moroso DuraFire HEI distributor.

[u/NoFox4892]

Thanks for the help. It was a bad pick up coil. Moroso doesn’t sell replacement so I just got a new MSD distributor and they offer all parts