Fuel Pump: Testing and Inspection

- Press off sealing caps (1) and unfasten nuts (2).
Remove cover for manifold.




- Twist engine cable connector and remove.




- Install connection of BMW Service Tester or pressure gage 13 3 060 with connecting line and T-piece 13 3 064 in the fuel intake lead.




- Unfasten screws.
- Remove cover for E box.




- Install connectors and cables to one side.
- Remove fuel pump relay (orange).




- Use tool 61 3 050 to bridge terminal 87 and terminal 30. Switch on ignition, actuate tool.
- Read off system pressure and check.




- Check fuel delivery pressure:
- seal fuel line after the T-piece with tool 13 3 010.
- Switch on ignition. Actuate tool 61 3 050 and check fuel delivery pressure.

OPERATING PRESSURE: 3 BAR.