I have a 95 F350 that wont stay running. Was parked a few years ago due to leaking oil cooler. We replaced the gaskets and CPS at same time. CPS was going bad before we parked it. After doing that the truck started and we let it run for 30-45 min with no problems. Shut truck off a few times and it restarted. After letting it sit for 30 min it will start and run for 5-10 sec then just stops. Has 2 new batteries, oil and filter, HPOP was replaced along with fuel pump not too long before it was parked. I have checked all fuses. Filter housing is filling with fuel. It will start then after it runs for a few seconds it shuts off. Does not loose power like running out of fuel, it is like you shut the key off. Then if you try to restart it it wont do anything but crank. Let it sit awhile and it will start and die just like before. Any ideas? I dont have a scanner to check for codes. Also the check engine light only comes on when the motor dies or shuts down.