13 31 029 Check Fuel Initial Pressure (S85)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
- 13 3 060
- 13 5 270
Necessary preliminary tasks:
- Read out fault memory of DME control unit; if necessary, work through test schedules.
- Switch off ignition.
IMPORTANT:
Fuel in fuel lines is under pressure. Catch and dispose of escaping fuel.
NOTE:
Recycling:
Catch and dispose of escaping fuel in a suitable container. Observe country-specific waste-disposal regulations.
Release quick-release fastener on fuel feed line. Connect special tool 13 5 270 between fuel feed line (2). Connect pressure sensor (3) of BMW diagnosis and information system. Or connect special tool 13 3 060.
Measuring fuel pressure:
- Connect pressure sensor to DIS tester.
- Connect DIS tester to vehicle.
- Select Drive.
- Select Engine electronics.
- Select Fuel supply.
- Select Fuel pressure sensor.
- Read off fuel pressure.
NOTE:
The vehicle has different fuel pressures when starting and when idling.
Test pressure, refer to Technical Data.
Switch off engine.
Assemble vehicle and check fuel system for leaks.