Cummins fuel solenoid problems One essential part of the N14 engine is the fuel pump solenoid, which plays a crucial role in the fuel delivery system. See my thread on Cool Starting Problems. I replaced the solonid and relay so I can't figure out what the problem is. To start the truck I have to turn on the ignition and manually lift the fuel lever, which is then held up by Jan 11, 2025 · Learn about Cummins fuel shut off solenoid basics, common issues, DTCs, and replacement procedures. :thumbsup: Reply Like jimduchek 1 day ago · Rawze. Have changed the fuel filter twice. I orderes a new one along with a supposed solenoid saver diode from Larry Buck INC July of 07. #1 A burned out solenoid, #2 a bad relay, or #3 a burned/corroded fusible link. So it will crank and fire once but not run after that because the shutoff isn’t holding up. com Apr 14, 2011 · Noticed fuel dripping from the lower right corner of the shutoff solenoid (engine side) took off the 4 bolts and took it off the truck along with the other pieces that come off with it.