fuel pump question

[danny12]

Hello Folks,

I have a question about the in tank fuel pump on a 1990 ranger. we put a new pump in and ran it around 10 miles or so working great. then went to it a few days later cranked for ever before it fired like it lost it's prime and ran rough finally smoothed out all is good next morning same thing. it would crank and run great after it warmed up so i put a fuel psi gauge on had 34psi running let it set over night it dropped to 10psi cycled the key 8-10 time no rise in psi pump running. took the bed off decided to pull the filler tube and have a look found fuel spitting from the motor housing at what looks to be a bypass port where my finger is in the pic.

my question is bad pump or something else in the system cause it to start bypassing

 

[alwaysFlOoReD]

WAG; I wouldn't think that fuel should be going anywhere but into the fuel line. Bad pump.

PS; WAG = Wild Ass Guess

 

[adsm08]

I agree, a bad pump. There shouldn't be a bypass of any sort on a return type fuel system, but even still the only thing that should trigger a bypass should be excessive pressure, which you don't have.

 

[danny12]

Kinda what I was thinking,
but thought i'd get a couple more opinions thanks Gentlemen.