My Combo, Manifold Or Ported VAC Advance, We'll See...

Big loser right now. As soon as I would hook manifold vac, it would start misfiring like crazy.

But if I left it unhooked, I could turn the distributor to advance and no misfire..

I took the distributor out and, I somehow put in the wrong one. Bushings loose as a goose. If I put vacuum to it and spun it, the reluctor made contact with the pickup.

I just now found the distributor that I thought I had put in. It has nice tight bushings.

I took it apart to clean and put a bit of lube on the bushings. I am going to set it up with an advance limiter screw in the morning.

Then I will try again.
You're gonna have to reset the timing with the advance plugged into manifold vacuum. It probably had too much advance. You may need to back off the timing with MVA.