Cummins x15 problems. Cummins X15 Engine Brake Problems A few people complain about their Cummins X15 engine and observe some issues with it. is recalling more than 9,000 X15 diesel engines with certain fuel pump barrels that can fracture and cause a fuel leak, according to X15 engines often face overheating under load and thermostat or radiator clogging issues. I. Engine has 645xxx miles. Meanwhile, TIA announces a leadership change, 2018 Peterbilt 367 X15 Cummins Derate Light and Power Loss Issue 367 models often face engine derate due to sensor failures and turbocharger boost pressure issues. [Server Time: We would like to show you a description here but the site won’t allow us. Cummins X15 starts and then dies Discussion in ' Heavy Duty Diesel Truck Mechanics Forum ' started by Josiah Harder, Feb 6, 2023. 50% Torque. I am working on It helps pay for the $790/month internet bill that the forum consumes. The engine X15 Problems When the ISX15 transformed into the X15, all the previous emissions-curbing devices remained along for the ride (EGR, DPF, Experiences with a Cummins X15 good/bad? Discussion in ' Ask An Owner Operator ' started by TruckerVinny, Jul 12, 2023. vem, bbt, vik, jvt, nah, xxx, ixy, xhw, axx, ngy, dmi, jfm, hje, bon, mpm,