Hi, everybody! Citroen C4 BlueHDI 120: The fuel pump in the tank can’t be heard. It hums very, very silently in case of ignition. Citroen Grand C4 Spacetourer BlueHDI 130: The fuel pump in the tank hums so loudly that it drowns the engine and I get headaches. In the Citroen workshop asked: Yes, the pump is audible, but nothing extraordinary. More Citroen workshop visited: Same statement. The fuel pump in the BlueHDI 130 was changed and thus something la With the BlueHDI 120 the pump pressure is 0.6 bar, with the BlueHDI 130 now 5 bar. I asked for a cost estimate for the replacement of the supposedly intact pump. The estimate was made using the FIN. The pump as spare part is listed with the number “9806721580”. To this number, however, I find now used pumps from the BlueHDI 100/120/150. That would indicate that the pump remained the same when updating to the BlueHDI 130. How is your knowledge With an audio recording from the interior of the vehicle. First from the driver’s seat, then near the rear middle seat. Thank you very much in advance for your input.