spn 157 fmi 18

[TruckerBrent]

(01-18-2023 )tree98 Wrote:  Like i said you need to do a leakdown test using insite. If it loses more than 4000 psi in 1 minute (with 559 you most certainly will be) you need to figure out why. retorqe the injector quill tubes, cap injectors and re run leakdown test till you can isolate 1 or more injectors as bad. Where they genuine cummins injectors or aftermarkets? Have you replaced the relief valve at the end of the rail?

Ok so I’m having a similar issue, same engine 2350 same code, I lose power loaded up hills and empty I’m fine, I ran a injector leak test and my truck held pressure, so now what do I do? I’ve replaced the fuel pressure sensor and the pressure relief valve, I’m desperate need of help,