well, for one i saw that the hose connecting the primary fuel rail to the secondary has a nasty kink in it. That might be causing the issue.
As for the varnished fuel, is it that hard to drop the tank? it looked like 2 straps and it'd come right down.
AFAIK it has all the emissions stuff still attached, its a relatively untouched rx-7
Wile i can't spot any missing vacuum lines it doesn't mean that some of them might be bad.
the leading coils checked out and it DID run, the issue i believe is in the fueling side.
I have a set of known good injectors, the secondaries were swapped by the seller but not the primaries. I want to swap them after seeing the fuel i pulled out, but i don't know what gasket to get to replace the one between both upper and lower intakes