CM2250 shutting of while trying to take off

[ricoriverausmc]

(09-22-2025 )marek4792 Wrote:  Did he check the guts and plungers to make sure they aren't sticking? Fuel rail pressure relief valve and sensor replaced? Has the pump actuator on it been replaced? Fuel pump regulator? How about the check valve under the electric lift pump? Davco check valve? 559 is usually a mechanical issue that the fuel system cannot hold pressure unless the fuel pressure sensor is reading invalid..

Yes he did one plunger was sticking so he changed fuel pump head. But was not the complete problem