BMW 13537546244 Fuel Injector Continental

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For 2003 and later 325i models with M56 engines, special tools are needed to remove the fuel rail and injectors. Depressurize the fuel system and disconnect the negative battery terminal cable. For M52TU engines, remove the cabin filter cover and housing, and the trim panel. Disconnect the fuel regulator vacuum hose and air intake temperature sensor wiring connector. Remove the fuel rail with the injectors. To remove a fuel injector, pry off the metal securing clip and pull the injector from the fuel rail. For M54 engines, follow the same steps. The fuel pressure regulator on M52TU engines is located within the fuel tank and cannot be serviced. If defective, the fuel tank must be replaced.

It is recommended that the injectors removed should be replaced with ones of the same kind due to possible differences in rates of flow between manufacturers. Given the high pressure nature of fuel injection systems, it is important that a careful check be done on fuel injector O-rings, and where applicable, fuel rail feed line O-ring inspection must not be overlooked without any intentions of reusing these if they are brittle, cracked, deformed, compressed or damaged. To facilitate assembling and prevent spoilage of Lube injector o-rings and fuel rail O-ring with fresh oil or petroleum jelly. Specific procedures for various BMW engine types such as S14, M20, M42, M44 850 M52 and 852 include steps like relieving fuel system pressure, disconnecting electrical components and fuel lines; removing Fuel Rails; checking and replacing O-rings when necessary; ensuring similar types of injectors are fitted; then reassembling components in reverse order taking care not to damage valve covers or allow debris to enter while completing this process.

Remove the upper engine covers, then detach the oxygen sensor connectors and unclip the wiring harness from its holder, marking the connectors for reassembly.

At the rear of the manifold, use a special tool to press the locking clip inside the end of the fuel line fitting to disconnect the fuel supply line from the fuel rail.