My fuel pressure keeps dropping down to about 32 psi after driving for a while. I have a bbk Adjustable fuel pressure regulator, I'm running about 38-39 psi with the vacuum off. I was cruising and felt some hesitation between 2k - 3k so i took the car home. Pulled the vacuum and 32 psi, second time its done it. I have 174k on the car, and can smell raw fuel from under the hood not to strong but its there. A while back I had a leaking injector and replaced all the O-ring and hats on them all. Regulator is dry, no leaks from it, no other visible leaks.