re: Truck wont stay running, possible problems?

An old trick I learned to see if the fuel pump is bad is to get a hammer or something similar and tap on top of the fuel tank a few times.

after doing that,if you can crank the vehicle & it stays running, more than likely your fuel pump is bad.

Change the fuel & air filter, it wouldn't hurt and it should be fairly inexpensive.

Also look at all the vaccum lines & hoses. Make sure all the connections are on properly. Sometimes the vaccum lines will rot and a hole will develop causing the engine to 'suck air'.

Make sure all your spark plug wires are securely connected. Check all electrical connections as well.

Good luck