So, I am having a real issue. My truck started 2 days ago and instantly there was an awful grinding noise. When it was cranking it sounded fine. When I touched the pedal, for just a moment it sounded like the starter was still engaged. That went away. I free revved it (I know I'm dumb) and at 1800 rpm it hung for a moment and then died. I tried to restart the truck, it just cranked for about 15 seconds. I stopped, then tried again and now it isn't doing anything as if the batterys died. I really need to get this truck up and running (wife already wants me to get rid of it) any and all help is appreciated. Truck and mods 99 24v 5.9 Nv4500 Valair dual disk Raptor fuel pump Stock turbo 150 injectors Bhaf 4in exhaust Ts mvp programmer. No codes. I just used the scan tool. Any help is greatly appreciated

 

Update, it now cranks. Nothing else

 

Another update, sorry for the spam, changed the fuel filter, it starts and isn't doing whatever it doing to begin with. It took a little coercion but hey. Still worrying me whatever happened

 

Do you have a way to monitor fuel pressure?