Shraeder valve and possible fuel pump issue
 

Hey I'm new to this site. I have a 2010 F-150 5.4.
My truck started not wanting to start every now and again. Randomly. Turns over. Wanting to start but seems like it's not getting any fuel. Tried turning the key on and off to prime but didn't work. Tried MAFS (mass air flow sensor) by unplugging to see if that was it. Nothing.
I'm currently looking for the schraeder valve to check how much psi is in my system. But can't seem to find it. If anyone has any other ideas please! Shoot me a comment or message. When my truck does start. I listen to the fuel pump and its awfully loud. Im thinking it's the fuel pumped starting to go but I'd like to know the real problem if that's not it. Guessing sucks.
Thanks guys. Take it easy.

Your truck doesn't have the schrader valve any more. A computer has to be hooked up to the test connection to read the pressure I think.

Take a look at the FPDM. They cause more problems than the pump.

Hey Roadie.
From what I read my 2010 does not have a FPDM. It was taken out and is not there on the 09-up I think.

The only way to test the fuel pressure is with a OBD2 scanner.

You also don't have an easily serviceable fuel filter, it's inside the tank with the pump. So is the regulator.

Really? All of that inside the tank lol wonderful. That's helpful too know though at least I'm not tried to find it on the outside. I just purchased that scanner so I will scan. Although my truck has not lights on so I don't know if that will pick up a code that's not tripping.

Reading out the fuel pressure has nothing to do with the CEL, it's not a code you are looking for, you have to read out the fuel pressure PID. Basic code readers can't do that.