Fuel Injectors

In order to remove the N55 fuel injectors from the cylinder head, special tool #13 0 270 must be utilized. Failure to use the special tool will result in damage to the injectors.

Fig 1: Identifying Fuel Injectors

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Fig 2: Removing N55 Fuel Injectors From Cylinder Head Using Special Tool (13 0 270)

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NOTE: Do not open the high pressure fuel injection system if the coolant temperature is above 40°C. The residual pressure in the high pressure fuel system could cause bodily injury.

NOTE: It is essential to follow the repair instructions and observe the utmost cleanliness when working on the high pressure fuel system. Even minute soiling or damage at the connections of the high pressure lines and cause leaks.

There is a new tool # 13 0 280 that must be used when replacing the PTFE seals on the tips of the solenoid valve injectors. As with piezoelectric injectors these seals must be replaced if and when the injectors are being re-installed.

Fig 3: Identifying Solenoid Valve Injectors

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Fig 4: Identifying Solenoid Valve Injectors And Special Tool (13 0 281)

Courtesy of BMW OF NORTH AMERICA, INC.