possible fuel pressure regulator fix
 

I was haven a issue on my 95 maxima with it not holdin fuel pressure and it came down to the pressure regulator lettin to much fuel back in the tank( key on engine off.) i unhooked the return line put my finger on the back of the regulator and kinda forced the fuel in reverse u can say,and well bye god it holds pressure now. im assumein dirt or something caused the diaphram to stick. but just wanted to post this in case someone else runs into a similar issue. i thought it was a leaky injector at first,but after pullin the plugs the pistons were dry. hope this helps someone in the future.