13 31 029 Checking fuel pump delivery pressure (N52)
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2010 BMW 528xi, 2010 BMW 528i, 2009 BMW 528xi, 2009 BMW 528i, and 2008 BMW 528xi. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
- 13 5 220 .
- 13 5 221 .
- 13 5 222 . See FUEL SYSTEM - SPECIAL TOOLS .
IMPORTANT:
The fuel in the fuel lines is under pressure (approx. 5 bar)!
Catch and dispose of escaping fuel.
Catch and dispose of escaping fuel.
Necessary preliminary tasks:
- Switch off ignition.
- Remove acoustic cover . See 11 00 REMOVING AND INSTALLING/REPLACING ACOUSTIC COVER (N52/N52K) .
Remove dust cap (1).
Connect special tool kit 13 5 220 (comprising 13 5 221 and 13 5 222 ) to pressure sensor of DIS Tester. See FUEL SYSTEM - SPECIAL TOOLS
Connect pressure sensor to DIS Tester.
IMPORTANT:
Do not under any circumstances screw in the check valve up to the mechanical stop.
This could damage the valve in the pressure regulator housing.
This could damage the valve in the pressure regulator housing.
Mount special tool kit 13 5 220 to injection tube and tighten knurled nut hand-tight.
Screw out check valve (1) so that valve in pressure regulator housing is closed.
Start engine.
Screw in check valve (1) until a pressure reading is indicated on DIS Tester.
Measuring fuel pressure.
- Select Measurement.
- Multimeter function appears
- Select Pressure test
- Read off value of fuel pressure.
Compare actual value of test pressure with specified value.
Switch off engine.
NOTE:
Removing special tool kit 13 5 220
:
- Switch off engine
- Screw out check valve fully again.
- Remove special tool kit 13 5 220 from pressure regulator housing.
- Catch and dispose of escaping fuel.
NOTE:
Read out fault memory of DME control unit.
Check stored fault messages.
Now clear the fault memory.
Check stored fault messages.
Now clear the fault memory.