13 31 029 Checking fuel delivery pressure

WARNING: This page is about a different car, the 2011 BMW 750xi, 2011 BMW 750Lxi, 2010 BMW 750xi, and 2010 BMW 750Lxi. However, it is still accessible from the selected car via links, so may be relevant.

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 And Circlip

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

Fig 2: Removing Adapter From Special Tool (13 5 270)

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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: Checking Fuel Delivery Pressure On IMIB Using Special Tool (13 5 270)

Courtesy of BMW OF NORTH AMERICA, INC.

Establish fuel delivery pressure. Read off fuel delivery pressure on IMIB and compare with values in diagnosis system.

Assemble engine.

Check fuel system for tightness.