I have a buddy with a '03 250 hp cummins bone stock with 85,000 miles, when it is below 10 deg F the truck will not start all of a sudden unless it is plugged in. It cranks over plenty fast to start. I plugged in my code reader and found a crank shaft sensor fault. He took to dealer, they put a new sensor in and $100 later gave him the truck back. The next day it was 2 deg and would not start. I opened water drain and turned key on, there was fuel pooring out like crazy, I figured the pump is good. He took to dealer they told him the pressure was too low, 5 psi with new filter. They installed new transfer pump in fuel tank, $100 later gave truck back. The next day it was
-12 deg, wont start. plugged truck in and took to dealer let sit over night so the tech could try starting it the next day. Truck would not start, they said the rail pressure was too low during cranking, installed new rail pres relief valve, $100 later gave truck back. the next day it was -18 deg no start. Back to the dealer very upset. I went in with him and told the dealer to make sure the CP3 pressures are good and the fuel control solenoid is good, they can not figure it out. Any suggestions, sorry for the long post!
-12 deg, wont start. plugged truck in and took to dealer let sit over night so the tech could try starting it the next day. Truck would not start, they said the rail pressure was too low during cranking, installed new rail pres relief valve, $100 later gave truck back. the next day it was -18 deg no start. Back to the dealer very upset. I went in with him and told the dealer to make sure the CP3 pressures are good and the fuel control solenoid is good, they can not figure it out. Any suggestions, sorry for the long post!