When having changed the fuel filter what can be wrong with a 5.4.tritan v8
It will start if you spray starting fluid in carb
Maybe the fuel pump is not working. When you turn the key on you should hear a faint noise coming from the gas tank if it is working. Try banging on the gas tank to see if the fuel pump starts.
Did you install the filter in the correct orientation? There should be an arrow on the direction of flow on the filter itself. The arrow should be pointing towards the engine.