Caution:
- Fuel is flammable and a hazard to health.
- Observe relevant safety regulations.
Drain fuel tank.
Remove fuel pump unit (3) and disconnect hoses.
Removing and installing fuel filter
Release hose clips at fuel filter (4).
Caution! Note correct direction of flow through fuel filter.
Remove/install fuel filter.
Secure non-reusable hose clips with pliers, BMW No. 13 1 500.
Removing and installing fuel pump and fuel level sensor
Disconnect the electrical connections at the fuel pump (5).
Release the hose clip at the fuel pump.
Remove fuel pump.
Installation is the reverse of the removal procedure.
Secure non-reusable hose clips with pliers, BMW No. 131500.
Caution!
- Make sure O-ring (6) is in perfect condition.
- After installing, check fuel pump unit for leaks.
Tightening torque: Fuel pump assembly to tank — 5 Nm
Checking fuel pump pressure
Connect test pressure gauge, BMW No. 16 1 500, on the pressure side.
Start engine and allow to idle.
Fuel pressure: Specification — 3±0.2 bar (42.69±2.85 psi)
Note: If fuel pressure is low, check pump, fuel filter, pressure regulator and fuel line.