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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 (ES300)

Removal (ES300)

  1. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative battery cable. Remove air cleaner hose. Disconnect accelerator cable and A/T throttle cable. Disconnect throttle Position (TP) sensor connector. Disconnect Idle Air Control (IAC) valve connector. Disconnect EGR gas temperature sensor and valve position sensor connectors.
  2. Remove Acoustic Control Induction System (ACIS) vacuum switching valve, EVAP vacuum switching valve, and EGR vacuum switching valve. Remove Data Link Connector (DLC) No. 1 from bracket on Intake Air Control (IAC) valve. Disconnect power steering hose from No. 1 engine hanger. See Figure.
  3. Remove PCV hose from PCV valve at right cylinder head. Disconnect ground strap and cable from ACIS intake air control valve. Disconnect ground cable from air intake chamber. Remove brake booster vacuum hose from air intake chamber. Disconnect 2 water by-pass hoses from throttle body.
  4. Remove air assist hose from throttle body. Disconnect EVAP hose from pipe on emission control valve set. Remove 2 vacuum hoses from ACIS vacuum tank. Remove engine wire clamp from emission control valve set. Remove air intake chamber assembly and gasket.
  5. Disconnect fuel injector connectors. Disconnect air assist pipe from bracket at fuel line. Remove air assist hoses from intake manifold. Remove fuel line clamp. Wrap a towel around fuel line quick connector. Disconnect fuel line from engine compartment fuel filter. See FUEL LINE QUICK CONNECTOR . See Figure.
  6. Remove fuel rail bolts. Remove fuel rails together with injectors and fuel line. Remove spacers from intake manifold. Remove injectors from fuel rails. Remove "O" rings and grommets from injectors.
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