Fuel Pressure Regulator: Service and Repair

Fuel Pressure Regulator Installation
a. Apply a small amount of clean engine oil to a new O-ring and insert it to the fuel rail carefully.

CAUTION: Do not let the engine oil get into the fuel rail.

b. If the fuel pressure regulator does not move smoothly, the O-ring may be folded. Then, remove the regulator to check the O-ring for damage.
c. Tighten the regulator to the specified torque. Tightening torque: 8.8 Nm (6.5 ft lb)