I hadn't really noticed until my truck started running very sluggish. I changed the fuel filter (seems to solve 99% of problems with these trucks). Still sluggish.
Fuel pump sounded like hell when I primed it. A buzzing, grinding "zzzt ztt zt zzzzzt zt" sound while it primed.
So we replaced it, and the truck runs great. Pain in the beepbeepbeep job, by the way.
Anyhoo, we sawzall the old pump open and realize it's jammed with dog hair, sand, crap. I guess I need to filter my fuel better. Lesson learned.
In any event, I noticed the new pump, while not as horrible sounding, still makes a lot of noise when priming. Still that zzzt zzzzzt zztttt sound, but not quite as bad.
Maybe I just never noticed that these pumps are noisy bastards?
What does yours sound like?