13 31 029 Checking fuel delivery pressure (N55, N63, N63O1)

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Special tools required:

13 5 270
11 4 310
11 5 364
13 3 060

Necessary preliminary tasks:

Connect BMW diagnosis system

IMPORTANT: Lines are under pressure!

Wear safety goggles and gloves.

Fuel can emerge spontaneously at high velocity when the fuel line is released!

Recycling:

Catch and dispose of escaping fuel with auxiliary materials.

Observe country-specific waste disposal regulations.

NOTE: Remove circlip (1).

Unlock and detach fuel line (2) to fuel tank from fuel line (2) to high pressure pump.

Fig 1: Identifying Fuel Line Circlip

Courtesy of BMW OF NORTH AMERICA, INC.

Unscrew adapter (1) from special tool 13 5 270 .

Fig 2: Identifying Adapter And Special Tool (13 5 270)

Courtesy of BMW OF NORTH AMERICA, INC.

Insert special tool 13 5 270 into disconnected fuel line.

Screw onto special tool 13 5 270 , the special tool 11 4 310.

Screw IMIB 100 bar pressure sensor (1) on the special tool 11 4 310.

NOTE: As an alternative to the 100 bar IMIB pressure sensor (1), the 25 bar pressure sensor can also be used. For this, screw on special tool 11 5 364 instead of special tool 11 4 310 into special tool 13 5 270 . Or directly screw the pressure manometer from the set of special tools 13 3 060 onto the special tool 13 5 270 .

Fig 3: Identifying Special Tool (13 5 270), IMIB 100 Bar Pressure Sensor, And Special Tool (11 4 310)

Courtesy of BMW OF NORTH AMERICA, INC.

Establish fuel delivery pressure. Read off fuel delivery pressure IMIB (Integrated Measurement Interface Box) and compare with values in BMW diagnosis system.

Assemble engine.

Check fuel system for tightness.