355 sbc injectors

[misterpat]

Ok, Getting closer to a good running engine. It seems my fuel injectors are leaking down. Symptoms include hard hot starts and the smell of gas in the garage when i come in after work. Whats the general conscientious on injectors? While I have it apart, I'm going to put in an adjustable regulator also.

EDIT:

Quick pressure test shows it take a few seconds to build pressure and once the pump kicks off, drops rapidly to 0 in less that 3 seconds. Pressure regulator diaphragm has no holes as I ran it for 5 minutes with the line off to see if gas came out the vacuum port, but it stayed dry.

EDIT #2

Pinched off the return line. Pressure is holding. Is there a check valve of sorts in the regulator?

EDIT #3

Now pressure is holding. This is strange. Im guessing something was dislodged in the regulator from the brief higher pressure?