E90 models utilize a single fuel injector per cylinder. Over time injectors can become restricted or fail electrically. If you have an injector giving you a problem, I suggest replacing them in sets of six. This way you maintain an even flow from all the injectors. If you are removing fuel injectors to replace the intake manifold and you plan to reuse the fuel injectors, replace all the fuel injector sealing O-rings.

Normally-aspirated E90 engines utilize standard style fuel injectors that mount in the intake manifold runner and spray fuel on the back side of the intake valves.

Turbocharged E90 engines utilize a direct injection style injector. This style injector sprays fuel directly into the cylinder and is mounted in the center of the cylinder head between the camshafts. These require a few steps and special tools to replace that you may not be familiar with. Be sure to read through the entire procedure before beginning.

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Time: 2.5 hours
Tools: Set of sockets (10mm):[ Ссылка ], flathead screwdriver:[ Ссылка ], clean rags:[ Ссылка ]
Parts Required: Fuel Injectors:[ Ссылка ], fuel injector O-rings:[ Ссылка ], fuel injector Teflon seals:[ Ссылка ], steel fuel lines:[ Ссылка ]
Hot Tip: Work with a cool engine and relieve fuel system pressure.
Performance Gain: Clean and even flowing fuel injectors
Complementary Modification: Replace with performance injectors: [ Ссылка ]

Applicable Models:[ Ссылка ]
BMW 325i Sedan (2006)
BMW 325xi Sedan/Wagon (2006)
BMW 328i Coupe/Conv (2007-13)
BMW 328i xDrive Coupe (2009-13)
BMW 328i xDrive Sedan (2009-11)
BMW 328i xDrive Wagon (2009-12)
BMW 328i/xi Sedan (2007-11)
BMW 328i/xi Wagon (2007-12)
BMW 328xi Coupe (2007-13)
BMW 330i/xi Sedan (2006)
BMW 335d/i/xi Sedan (2007-11)
BMW 335i xDrive Coupe (2009-13)
BMW 335i xDrive Sedan (2009-11)
BMW 335i/is Coupe/Conv (2007-13)
BMW 335xi Coupe (2007-13)

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