Lincoln 6M8Z-9D280-C Fuel Supply Manifold Assembly

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To replace the fuel injectors, start by relieving the fuel system pressure and equalizing tank pressure by removing the fuel filler cap. Then, disconnect the cable from the negative battery terminal and remove the air intake duct. Disconnect the accelerator cable and cruise control cable (if equipped) from the throttle lever cam. Next, disconnect the fuel supply line from the fuel rail and the vacuum line from the fuel pulsation damper. Disconnect the electrical connectors from the fuel injectors. Remove the fuel rail mounting bolts and remove the fuel rail and injectors as a single assembly. Remove the clamp that secures each fuel injector to the fuel rail and pull out the injector. Remove the old O-rings from each injector and discard them. Install new O-rings on the injectors before reassembling the injectors and the fuel rail. Lubricate the new injector O-rings with clean engine oil before installing them. Finally, reconnect the battery and start the engine to check for any fuel leaks. For V6 models, additional steps include removing the upper intake manifold, disconnecting the vacuum line from the fuel pulsation damper, disconnecting the fuel supply line from the fuel rail, disconnecting the electrical connectors from the injectors, removing the fuel rail mounting bolts, disengaging the injectors from the lower intake manifold, and lifting the fuel rail and injectors from the engine as a single assembly. The rest of the steps for V6 models are the same as for four-cylinder models.