truck starts fine cold but when hot it takes several attempts before it starts. so I checked the fuel for op. pressure it's a little on the low side @ 31psi. Disconnect the vacum @ the fpr it's within specs again @ 40psi. apply vacum to the fpr pressure gauge decreases as it should. but it will not hold pressure for a min much less 5. book says could be 4 things injectors/lines leaking (not visable) fpr (thought that already passed test)
fuel pump(How to test w/o droping tank)

 

Any codes?

 

that would be to easy, no codes

 

that would be way to easy.
no codes