2000 Ram 2500 Won't start
 

Was driving down the interstate last night and my truck just shut off on me. Got it to the side of the road and tried to start it. It started and ran for about 10 to 20 seconds then shut off and now it won't start again. I have fuel comming to the engine and spark to the plugs but it still won't start. Have checked the relays and fuses and all seem to be ok. What can I check now. Had the truck towed to the house and it's the only transportation my family has. Any help would be greatly appreciated.

turn the key on and push a screwdriver gently into the test port on your fuel rail to make sure your getting gas