Distributor filling itself with oil

I wouldn't think it'd take much vacuum. That small amount, coupled with a "little" normal engine blowby and there you go.

Rusty, the vacuum would have to jump an inch void from the diaphram pod, to the body of the distributor, then create vacuum inside an open to atmosphere body .
Nevermind, going back to bed, this is starting out as one of " those days" lol.
Cheers