Hi, I have a 2017 JCB 3CX that's getting high temperatures above 60 °C. Once it reaches>60, the machine goes into limp mode. I recently changed injectors due to heavy black smoke. ( 3 was bad; I had rust and old fuel in the lines from the machine sitting for about 2 years.). I've changed every fuel-related filter and checked the fuel cooler ( fuel is cool coming out of the cooler). Just to get some ideas on what exactly could cause high fuel temperature.
Update: turned out to be a dying lift pump, it wasn't putting out enough fuel