06 expo slow start

[06expo]

I have an 06 expedition. It cranks for 10 seconds then starts and then runs fine. New fuel filter and fuel pump.

Any ideas?

 

[Skauber]

Is the crank normal, as in not slow like a bad battery? Does it do this every time, regardless of being hot or cold?

 

[46L281GT]

Same issue on a 2004. Have new filter but not new pump.

 

[stamp11127]

Check fuel pressure with a good gauge prior to starting. I think minimum pressure is 28 psi, running should be around 35-40 psi. If it is below 28 psi then it is leaking down somewhere. Leak points can be the hose at the pump, fittings, lines and injector stuck open.

If the initial pressure reading is within spec then diagnose the electrical side of the fuel system.