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Removal & Installation (6-Cylinder)

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  1. On 3-series, it may be necessary to remove ECU cover from right side of firewall. See ENGINE CONTROL UNIT (ECU) . Unclip plastic clips along top edge of engine compartment firewall. Remove screws and wiring harness duct along engine compartment firewall. See Figure.
  2. On all models, remove engine cover. See Figure. Loosen hose clamp and disconnect fuel supply hose from fuel rail. Remove 2 bolts and pull connector plate off fuel injectors. See Figure. Remove 4 bolts and disconnect fuel rail. Pull up on fuel rail and injectors.
  3. Remove retainer from top of fuel injector. See Figure. Remove fuel injector(s). To install, reverse removal procedure. Coat injector "O" rings with petroleum jelly.