Fuel Pressure Regulator
WARNING: This page is about a different car, the 2000 Honda Prelude, 2000 Honda Civic, and 2000 Honda CR-V. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect fuel pressure regulator vacuum hose. Check fuel system pressure. See FUEL PRESSURE in BASIC DIAGNOSTIC PROCEDURES article. Reconnect and again disconnect fuel pressure regulator vacuum hose. Ensure fuel pressure rises when vacuum hose is disconnected. If fuel pressure does not rise and fall as specified, replace fuel pressure regulator.