Removal (LS400)
- Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE . Disconnect negative battery cable. Remove engine cover. Remove battery cover and air cleaner inlet. Remove intake air connector located between throttle body and air cleaner assembly. Disconnect accelerator cable. Disconnect vacuum hoses from EVAP vacuum switching valve. Disconnect brake booster vacuum hose from intake manifold. See Figure. Disconnect PCV hose from PCV valve.
- Disconnect EVAP vacuum switching valve connector. Disconnect noise filter connector. See Figure. Remove bolts and disconnect engine wiring harness protector, wire clamp bracket and engine wiring harness from intake manifold. Place a shop towel under fuel line. Slowly loosen fuel pressure pulsation damper. Remove pulsation dampers and upper gaskets.
- Remove rear fuel line from fuel rails and lower pulsation damper gaskets. Disconnect injector connectors. Disconnect engine wiring harness from fuel rail. Disconnect Variable Valve Timing (VVT) sensor connectors. See Figure.
- Remove EVAP vacuum switching valve. Remove accelerator cable bracket and engine cover brackets. Remove fuel rail mounting nuts. Remove fuel rails and injectors as an assembly. See Figure. Remove spacers. Remove injectors from fuel rail. Remove "O" rings, grommets and insulators from each injectors.