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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 >> Installation (SC300)
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Installation (SC300)

  1. Install NEW brake booster union and intake chamber gaskets. Install NEW pulsation damper gasket. Install NEW "O" rings, insulators and grommets on injectors. Apply a light coat of spindle oil or gasoline to fuel injector "O" rings.
  2. Apply a light coat of spindle oil or gasoline to fuel rail injector opening. Using a twisting motion, push injectors into fuel rail. Ensure injectors are fully seated in fuel rail. Ensure fuel injector connectors are positioned outward.
  3. Install 3 spacers in position on intake manifold. Apply a light coat of spindle oil or gasoline to intake manifold injector ports. Place injectors and fuel rail assembly on to intake manifold. Temporarily install fuel rail-to-intake manifold bolts.
  4. Ensure injectors rotate smoothly. If injectors do not rotate smoothly, "O" rings were installed incorrectly. Replace "O" rings. Position injector connectors upward. Connect injector connectors. Injector connectors for cylinder No. 1, 3 and 5 are Dark Gray, and for cylinder No. 2, 4 and 6 are Brown.
  5. To complete installation, reverse removal procedure. Tighten fuel rail mounting bolts to specification. See TORQUE SPECIFICATIONS . Fill cooling system. Start engine and inspect for fuel and coolant leaks.
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