New fuel pump, new injectors, pressure regulator holds a vacuum. What else could be bleeding off fuel pressure while it sits?
use a set of hose pinch pliers on the rubber return line right after the regulator, connect pressure tester, build pressure on fuel line by priming fuel pump. monitor static pressure. this will help diagnose if fuel pressure regulator leaks or fuel rail leaks including new injectors.I guess I can. Not sure how though.
totally different animals and set up, a 77 2.25 carbureted versus a 94 fuel injected V8. too many variables on your vehicle to offer a simple solution. Campbel has been chasing this issue for a while on the forum.I get this same problem on my 1977 2.25 with a weber 34ICH.
There is no return line on these, any ideas?