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Home >> BMW >> 2013 >> Z4 28i, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 1360 (Fuel System - Repair (N54) -- Z4_E89) >> Fuel Pressure Check >> 13 31 029 Checking fuel delivery pressure (N54, N54T)

13 31 029 Checking fuel delivery pressure (N54, N54T)

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Special tools required: 

Necessary preliminary tasks: 

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.

Disconnect snap fastener (1) of fuel line.

Fig 1: Identifying Fuel Line Snap Fastener
G11150278Courtesy 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 2: Installing IMIB 100 Bar Pressure Sensor And Special Tool (11 4 310)
G08494412Courtesy of BMW OF NORTH AMERICA, INC.

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

Required follow-up work: 

Check fuel system for tightness.