13-02-2014, 10:50 PM
Poodle, 280 bar is the idle fuel pressure setting so that's what you'll see with the engine stopped but ignition on. For the ECU to send a pulse to open the injector though you need a minimum of 120 bar at the fuel rail. The injectors can cause fuel pressure to drop, but only usually at full load, I think this is because the seals kind of give way and the fuel pressure drops really suddenly.