Fuel pressure

What is your question?

Im pretty sure either my fuel pump is about to go out or my fuel pressure regulator is bad. How can I tell which it is? Car was running great and suddenly started to stall out. Took my foot off the gas and it stayed running for a short while. The moment I push the gas pedal even in park, the engine bogs down like its not getting gas. I thought if the regulator was bad, it would still run but generally rich and would see it in my exhaust. But im not seeing anything to indicate that. Could the pump be almost dead? What should the fuel pressure be on the fuel rail when I check it? Thank you in advanced for any help. Rich