Why does my duramax start then die?
Why does my duramax start then die? The lines and filter assembly are under vacuum when the engine is running. So if there is a leak, it will be air entering the fuel system which kills the engine. That is why, when pumping the primer to pull fuel from the tank, the engine will stay running. So, stop the air from leaking into the fuel system. What causes a 6.5L diesel engine to stall? SYMPTOM: Your 6.5L Diesel stalls just as if someone had reached over and turned off the ignition switch. CAUSE: There are two main causes. The first...