VorTecxas
American Nightmare
Yes, the test valve is post reg/inj, techically. The metal line it is in tees into the fuel rail halfway down and tees off at the regulator back into the return, so yes, you are technically post injection. Pump pressure is not the problem since it initially jumped to where its supposed to when the key was turned on. As soon as the pump shut off you started losing pressure, and from how slow it was I'd say bleeding injector(s) initially. Easy way to tell is pull the upper, hit the key, and look for leakage. If you look up at the pic I posted you'll notice the 8 smallest ports, thats where the injectors squirt into