Fuel Pressure Regulator: Installation

To install, reverse removal procedure using NEW "O" ring. Coat "O" ring with gasoline before installing fuel pressure regulator in fuel rail.
Ensure fuel pressure regulator rotates smoothly in fuel rail after installation to verify proper seating of "O" ring. If fuel pressure regulator does not rotate smoothly, check for improper "O" ring installation. Ensure fuel pressure regulator sets flat against the fuel rail.
Tighten bolt for fuel pressure regulator to specification. See TORQUE SPECIFICATIONS . Operate fuel pump and check for fuel leaks. See FUEL PUMP OPERATION under FUEL SYSTEM in BASIC TESTING article.