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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 (SC400)

Removal (SC400)

  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.
  2. Remove left side engine cover brackets. Disconnect brake booster vacuum hose. Disconnect PCV hose. Disconnect left fuel injector connectors. Disconnect left ignition coil connectors. Disconnect left camshaft oil control valve connector. Disconnect Variable Valve Timing (VVT) sensor connector.
  3. Disconnect engine wire from wire clamp on left valve cover. Disconnect engine wire from wire clamp on timing belt cover and rear plate. Remove bolts, and disconnect engine wire protector and wire clamp bracket from intake manifold left front bearing cap.
  4. Place towel under pulsation dampers. Remove pulsation dampers and upper gaskets. Disconnect fuel lines from both fuel rails. Remove pulsation damper and lower gaskets.
  5. Disconnect wire clamps from wire clamp bracket on right fuel rail. Disconnect injector electrical connectors. Remove EVAP vacuum switching valve. Remove accelerator cable bracket and rear engine cover bracket.
  6. Remove fuel rail-to-intake manifold nuts. Remove fuel rails and injector assembly. Remove injectors from fuel rail. Remove "O" rings, grommets and insulators from injectors.
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