Toyota 23901-75010 Tube Sub-Assembly, Fuel

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1. Relieve the fuel pressure and detach the cable from the negative terminal of the battery. 2. Detach the vacuum sensing hose from the regulator. 3. Place a metal container or shop towel under the fuel return hose. 4. Squeeze the hose clamp and detach the fuel return hose from the regulator. 5. On four-cylinder engines, detach the fuel return line and remove the two regulator bolts. On 3.0L V6 engines, use a wrench to unscrew the regulator. On 3.4L V6 models, the regulator is located on the rear of the intake plenum. 6. On 2.4L, 2.7L, and 3.4L engines, remove the pressure regulator mounting bolts and detach the regulator from the fuel rail. On 3.0L engines, unscrew the regulator and retrieve the O-ring. 7. Use a new O-ring and ensure the pressure regulator is installed properly on the fuel rail. The remainder of installation is the reverse of removal.

1. Relieve the fuel pressure and detach the cable from the negative terminal of the battery. 2. Remove the PCV hose from the cylinder head and intake manifold. 3. Remove the air intake plenum. 4. Mark each injector connector, disconnect the fuel injector electrical connectors, and set the injector wire harness aside. 5. Detach the vacuum sensing hose from the fuel pressure regulator. 6. Disconnect the fuel lines from the fuel pressure regulator and the fuel rail. 7. Remove the fuel rail mounting bolts and the fuel rail with the injectors attached. 8. Pull the fuel injector(s) straight out from the fuel rail. 9. If reusing the same injectors, replace the grommets and O-rings. 10. Installation is the reverse of removal, tightening the fuel rail mounting bolts to the specified torque.