Pressure

WM 200201 Checking fuel pressure (low pressure) on DFI engines

Read out the fuel high pressure actual value using the PIWIS Tester.
- Nominal pressure is approx. 5000.0 mbar to 5500.0 mbar. Monitor the fuel pressure for about 5 to 10 minutes.
- The pressure is not maintained. In other words: the fuel high pressure actual value has dropped considerably. There is an internal or external leak in the fuel system.
- The pressure is maintained. In other words: the fuel high pressure actual value has only dropped slightly.