What happens to you is a problem of internal wear of the injection pump is an electronic valve that manages the flow and reflux of the diesel I play play and that is the fault that you occasion have to go to a workshop specialized in bombs to repair it. If it does not exist, it is another option that is a kit that sells or sold Renault with some washers and oring to perform the repair by Avado ATETE Dario Vazquez Mechanic