Hi, I have a problem with 1.5 dci, the engine spins but does not start, I did the diagnostics of the Delphi ds150 and I have an error DF053 - The function of regulating the pressure in the ramp, so I changed the valve in the high pressure pump and the same as I check the pressure on the CR live strip is something for me does not fit because after switching on the ignition I have a 1bar on the bar, start turning the starter and the pressure rises to 250bar and then stops the pressure slowly drops to 1bar, the system seems to be tight because I do not have any visible leaks I wonder if the valves injections did not fall (as if they were letting everything in for a transfer) just what were all at once? it should also light up for 3 right? while continuing the diagnostics, I have found a RCH cut-off / yes. I do not know what is it? I have not mentioned the fuel filter since there is 250 bar at the start-up, it seems not to be bad ... Please, help me with my head in advance thanks for your help.