Morning gentleman, New to the group.
I have 2003 F150 4.6l. 165k miles
The truck fires up in the morning with no issues, if I shut it off and turn it back on no issues, However, If I shut it off and it sets for 30 minutes before restart, it cranks way to long before finally firing up.
Is there possibly a check valve allowing fuel bleed back to the tank.

If I let it sit all day (work) it fires right up.
Has anyone had this issue or can offer some insight.

Thanks

 

After it sits for 30 min and you turn the key back on do you hear the pump prime immediately?

 

Seems to wait, ill have to pay closer attention.

 

There's a check valve in the fuel pump, it has been known to go bad. When you let it sit for 30mins, when you know it'll happen; turn the key from off to the run position 3x without cranking. Then on the 4th time crank it. If it starts right away then that's probably your problem.

 

Thanks, Fordguy2100
I'll give that a try.