If the measured value has now dropped by less than 0.5 bar, the following faults can be present:
WARNING: This page is about a different car, the 2003 BMW 525i, 2002 BMW 525i, and 2001 BMW 525i. However, it is still accessible from the selected car via links, so may be relevant.
- Fault in delivery lines
- Fault in in-tank delivery hose
- Faulty pressure-holding non-return valve in fuel pump
Check components. Replace faulty components.
If the measured value has dropped by more than 0.5 bar again:
- Replace pressure regulator
NOTE:
- All the fuel hoses and hose clips which were detached within the framework of the checks must be replaced.
- Interrogate fault memory of DME control unit. Check stored fault messages. Rectify faults. Now clear the fault memory.