Not getting fuel... big issuse!

No rod. A slight leak around any clamp/connection- the mech pump would rather suck the air leak. I tried 2 summit holley electrics; too much pressure, with 2 new regulators. Got a Carter mech from Autozone, forgot I had it plumbed up.Using a remote starter button for 20 seconds- shot gas all over the place.
Small has an eccentric that the mech arm rides on; had one come loose, and spin on the cam snout, once. (timing never jumped, just no gas.)