Cummins isx 2350 boost problems

[Lunchtime92]

Found the culprit of this problem this morning, some one suggested to check the fuel return line at the back of the head for any kind of trash or gunk. When I took it off it was a little dirty but not terrible, but the check valve in the line was not functioning, it was staying open, so there was no back pressure. Put a new line and check valve on and that solved my maintaining boost pressure problem and the injector solenoid codes didn't come back all day.