How to Replace BMW Fuel Injectors

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    Disassembly

    • 1). Disconnect the ground cable from the negative battery terminal.

    • 2). Disassemble the injector pipe by removing the plugs, plate and screws.

    • 3). Gently push up on the injector pipe until all of the injectors have cleared the intake manifold.

    • 4). Remove the plugs and pull up the retainer. You should now be able to remove the injectors.

    • 5). Inspect the injector O-rings. If they are torn, worn or misshapen, replace them.

    Reassembly

    • 1). Install the O-rings onto the new fuel injectors, then seat them into the injector pipe.

    • 2). Reinstall the fuel injector retainer and plugs.

    • 3). Slide the injector pipe back into position. Be careful not to damage the injectors.

    • 4). Reassemble the injector pipe.

    • 5). Reconnect the ground cable to the negative battery terminal. Run the engine and make sure there are no leaks.

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