1998 Lexus SC 300FACTORY OEM SERVICE PROCEDURE

Fuel Injector Volume

  1. On ES300, remove fuel injector. See REMOVE/INSTALL/OVERHAUL article. Connect Fuel Tube Adapter (23801-20040) to fuel filter outlet side. Ensure fuel injector "O" ring is installed. Install Injection Measuring Tool Set (09268-41046). See Fig 1 or Fig 2. Install injector retainer clip. Attach a piece of vinyl tubing to bottom of fuel injector to prevent fuel splash. Put vinyl tubing into a graduated measuring cylinder. Go to step 4).
  2. On GS300, SC300 and GS400, remove fuel injector. See REMOVE/INSTALL/OVERHAUL article. Disconnect fuel inlet hose from main tube. Install Fuel Tube Adapter (09268-52011) to fuel main tube. Ensure fuel injector "O" ring is installed. Install Injection Measuring Tool Set (09268-41047). See Fig 1 or Fig 2. Install injector retainer clip. Attach a piece of vinyl tubing to bottom of fuel injector to prevent fuel splash. Put vinyl tubing into a graduated measuring cylinder. Go to step 4).
  3. On SC400, remove fuel injector. See REMOVE/INSTALL/OVERHAUL article. Disconnect fuel inlet hose from main tube. Install Fuel Tube Adapter (09631-22020) to fuel main tube. Ensure fuel injector "O" ring is installed. Install Injection Measuring Tool Set (09268-41047). See Fig 1 or Fig 2. Install injector retainer clip. Attach a piece of vinyl tubing to bottom of fuel injector to prevent fuel splash. Put vinyl tubing into a graduated measuring cylinder. Go to next step.
    Fig 1: Connecting Fuel Injection Measuring Tool Set (ES300)
    G97C06178Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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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.

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