2250 low rail pressure code

[zyNoT]

(07-26-2017 )Rig Wrench Wrote:  

(07-24-2017 )Unilevers Wrote:  the fuel pump actuator is a great spot to start. do a high pressure test and listen for any idle change when it climbs in pressure - it should stay perfectly smooth. if it starts to hunt slightly change the actuator.

can also be the check valves in the pump head, did you test em when the head was off?

Turned out to be filters best I can tell. After everything else, 2 new filters have seemed to cure it. Oddly though, the 3 other trucks filling out of the same spot have no issues.

I will say this. I have a CM2250 and I had this code when a fuel filter cracked. (No idea how it happened, but it caused this code). Also, if you don't do regular PMs at the correct intervals you will get low fuel rail pressure.