My 96 ford f-150 5.0 has a hard time starting, especially in the mornings ! I put a new fuel filter on it, new plugs and gauged them, new cap, rotor button and plug wires ! The fuel pump pressure reads between 40 and 45 lbs. And hold steady ! No gas in the regulator vacuum hose either ! The pressure drops some when I pull the vacuum hose off the regulator ! I just can, t understand why it, s so hard to start ! Now once it starts it runs good and has lots of power !