Toyota 23280-50050 Regulator Assy, Fuel Pressure

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To start, relieve fuel system pressure and disconnect the negative battery cable. For V6 models, remove the engine cover and Air Filter Box. Then, remove the fuel rail and Fuel Injector, followed by fuel pressure regulator mounting bolts to remove the regulator. Replace the old O-ring with a new one. Reverse removal steps for installation, ensuring proper torque for mounting bolts. For V8 models, disconnect the vacuum hose from the regulator and loosen the fuel return hose clamp. Remove bolts securing regulator to fuel rail and replace old O-ring with new one coated in clean engine oil. Follow the reverse order of removal for installation, tightening regulator bolts to the specified torque. Proper torque and careful handling of O-rings are crucial for a successful installation.

To relieve fuel system pressure, disconnect the negative battery cable. For 2UZ-FE engines, disconnect the vacuum hose and loosen the fuel return hose clamp. Remove the bolts securing the fuel pressure regulator and replace the O-ring before reinstalling. For other engines, remove the engine cover and Air Filter Box. Disconnect the fuel return hose and vacuum hose from the regulator. Remove the mounting bolts and discard the old O-ring. Installation is the reverse of removal.

Disconnect the vacuum hose from the fuel pressure regulator and loosen the fuel return hose clamp to disconnect the fuel return hose.