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Home >> Lexus >> 1992 >> SC 400 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System >> Fuel Rails & Injectors (SC300) >> Installation
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Fuel Rails & Injectors (SC300): Installation

  1. Install new grommets and "O" rings on injectors. Lubricate "O"-ring with light coat of gasoline and insert injectors on fuel rail using a twisting motion. Position injector connectors outward.
  2. Place the six insulators and three spacers in position on intake manifold. Place fuel rail with injectors in position on cylinder head. Temporarily install fuel rail mounting bolts. Ensure that injectors rotate freely and position connector facing up.
  3. Tighten three fuel rail mounting bolts to 15 ft. lbs. (21 N.m). Install control valve actuator and torque mounting bolts to 61 in. lbs. (6.8 N.m). Install Injector connectors, vacuum sensing hose and injector chamber brackets. Torque bracket mounting bolts to 13 ft. lbs. (18 N.m).
  4. Connect No. 2 fuel pipe to fuel rail with new gaskets and torque union bolts to 20 ft. lbs. (27 N.m). Connect No. 1 fuel pipe to fuel rail with new gaskets and torque union bolts to 30 ft. lbs. (42 N.m). Install throttle body and intake air connector.
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