macdoe:

Check compression in all cylinders first:
Remove all spark plugs.
Remove fuel pump relay (FPR).
Check pressures w/ open throttle.

Pull plugs from ignition amplifier (EZL) to prevent sparking.
Remove distributor cap, crank engine.
Is the rotor turning? If yes, bring #1 cyl to TDC, and check that the rotor points to the scribed mark on the body of the distributor.

Jumper sleeves 7&8 in the FPR socket. Do the pumps run?
Remove the return line at the fuel distributor (FD), and fit a piece of hose.
Run the pumps to check for return flow.

If these checks are positive, you can then proceed with additional analysis.