I would get/rent a fuel pressure gauge and test if fuel is leaking out.
There is a schrader valve(tire air valve) on the injector fuel rail used for test pressure.
2001 should have 65-70psi pressure when running, pressure should stay above 50psi with engine off, for a few months, but if it stays above that an hour then you are good.
For quick tests.
Ford computers run the fuel pump for only 2 seconds each time key is turned on, fuel pump won't come on again until engine starts(RPMs above 500)
To see if system is leaking pressure, try turning on key, then count to 3, turn off key, repeat this 3 more times, then try to start engine, leave your foot OFF the gas pedal.
If it starts normally then yes you have a pressure issue
Next test, is to see if injector is leaking, do the above key on, key off, 3 times, but this time before starting push gas pedal to the floor and hold it down, this turns OFF fuel injectors, it is called Clear Flooded Engine Routine
1. Key on
2. gas pedal to the floor
This turns off fuel injectors, as soon as you release the gas pedal injectors will start working
If engine fires at all when you foot is to the floor then engine is getting gas from somewhere, and it shouldn't be, so you have a leaking injector, and if you were to "add gas to intake" you would have a very flooded engine so it would start until all the gas was cleared out
Last edited by RonD; 05-05-2015 at 08:09 PM.