2001 Ford F-150 Hard Starting

First make sure your check engine light comes on when you first turn the key on. If it does then go to the gas tank and have someone turn the key on make sure you here the pump run then pop the hood and on the fuel rail you will see a schrade valve looks like a tire valve unscrew the cap and use something to push in the little button to make sure fuel comes out. If it does then spray a little carb cleaner down the throttle body and see if the engine starts if it does then you have a firing problem unplug one injector and with the key on one side should be hot then take your test light and hook it to the positive post of the battery and stick the other side to the not hot side of the injector when the engine cranks you should get a flash on your test light if you have no flash and no fire then you need to start looking at a cam or crank sensor let me know what you find and if the check engine light does not come on when you turn the key on then you need to find the pcm relay and make sure that it has voltage to terminals 85 or 86 and 30 or 87 you should be able to jump 30 to 87 and check engine light should come on and a few other relays including the fuel pump relay