ISX 2250 fuel system fail

[snailexpress]

(05-03-2018 )Rounded_nut Wrote:  Retorque all the high pressure lines, if that fails get a high pressure fuel line isolator from Cummins and, following the instructions to release pressure in the system, test each line to identify the leaking injector. I had the same problem with my 2350.

Did you measure drain flow from injectors or did pressure leak test? Is it safe to run engine with one injector off?