2008 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE

Fuel Pressure Regulator: Reassembly

  1. INSTALL BRACKET 
    1. Install the bracket to the fuel filter.
      Fig 1: Identifying Fuel Filter Bracket
      G04947955Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL FUEL PRESSURE REGULATOR ASSEMBLY 
    1. Apply a light coat of gasoline to 2 new O-rings, and install them onto the fuel pressure regulator.
      Fig 2: Locating O-Ring
      G05854077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the fuel pressure regulator to the fuel filter.
      3. Fig 3: Identifying Fuel Pressure Regulator With Cap
      G05854078Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Attach the 2 claws of the fuel filter and install the cap.
      NOTE:
      • Make sure the O-rings are not cut or pinched during the installation.
      • Attach the claws securely.
  3. INSTALL JET PUMP 
    1. Apply gasoline to a new O-ring and install it to the jet pump.
      Fig 4: Removing O-Ring From Jet Pump
      G04947958Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the jet pump to the sub-tank as shown in the illustration.
      Fig 5: Installing Jet Pump To Sub-Tank
      G04947959Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL FUEL FILTER 
    1. Install the fuel filter to the sub-tank and attach the 2 claws.
      2. Fig 6: Installing Fuel Filter To Sub-Tank
      G04947960Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL FUEL SUCTION PLATE SUB-ASSEMBLY 
    1. Install the spring to the fuel suction plate shaft.
    2. Install the fuel suction plate to the sub-tank.
    3. Install a new E-ring.
      Fig 7: Identifying E-Ring
      G04947948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Connect the fuel pump connector to the fuel suction plate.
      Fig 8: Locating Fuel Pump Connector
      G04947952Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL FUEL SENDER GAUGE ASSEMBLY 
    1. Set the fuel sender gauge to the fuel sub-tank. Then slide the sender gauge downward to install it.
    2. Connect the fuel sender gauge connector to the fuel suction plate.
      NOTE: Do not touch the sender plate's resistance plate area or the contact area.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.