Greetings Zatara, in your comment you do not specify if you already replaced the fuel filter, if it is saturated with dirt the fuel will not properly flow to the injection pump, it also verifies that the transfer pump is supplying enough fluid. of food, if you do not have supply pressure, the injection pump is not appropriate and does not inject. You must also take into account the physical state of the hoses that are not cracked. After verifying all this and if everything is fine then your injection pump could be damaged and will require laboratory service to re-regulate it. Greetings and luck