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Home >> Lexus >> 1998 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System >> Fuel Rails & Injectors >> Removal (GS400)

Removal (GS400)

  1. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative battery cable. Remove engine cover. Remove intake air connector pipe. Disconnect accelerator cable. Remove EVAP vacuum switching valve connector. Remove PCV hose from upper intake manifold. Remove EVAP vacuum hose from EVAP vacuum switching valve. Remove air inlet hose from air tube.
  2. Remove No. 2 engine cover bracket from No. 1 engine hanger. Remove EVAP vacuum switching valve from upper intake manifold. Remove accelerator cable clamp from upper intake manifold. Remove No. 3 engine cover bracket from upper intake manifold. Remove bolts and disconnect engine wire protector from upper intake manifold and camshaft bearing cap.
  3. Disconnect wire clamps on engine wire from brackets on fuel rails. Disconnect engine wire from right fuel rail. Remove fuel pressure pulsation dampers and gaskets. See FUEL PRESSURE PULSATION DAMPER .
  4. Remove bolt and ACIS vacuum switching valve from upper intake manifold. Remove nuts and accelerator cable bracket. Disconnect injector connectors. Remove fuel rail-to-lower intake manifold nuts. Remove fuel rails, injectors and spacers. Remove injector cover from No. 5, 6, 7 and 8 injector. Remove "O" rings, grommets and insulators from each injector.
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