The factory fuel pump on my 6.9 motorhome quit at the end of the season 2009.
Right after doing an oil change, I fired it up right after dumping the fresh oil in, and I saw fuel ******* forward, pass the front bumper, i'm like ***?
Turn it off, look around, everything was wet on the passenger side so couldn't really see what it was coming from, checked all hoses, were all fine, so I fired it up again, and looked, that little vent hole on the fuel pump it's self, it was ******* fuel out of that hole.
New Carter fuel pump in, has about 14k miles on it now, no problems.
Odd thing about that failure is it never showed any signs, it simply started ******* fuel out that vent hole. Always started on the first turn of the starter, cold or hot. No fuel smell, nothing in the oil. Just bam all of a sudden! And it was the factory lift pump that had about 140k miles.
Same year, but middle of winter, fuel pump died on my 7.3 (not original, and cant' remember brand), new one is a carter though. That one was showing hard starts, right in the middle of summer, but that's really it, no mixing of fuel into oil.
And one day, just quit, wasn't pumping fuel at all.
so i changed it with a Napa pump so far so good 8,000 miles
