Back in the dark ages, Airtex rebuilt pumps were always considered to be a bottom of the heap choice- - - -cheap and unreliable. See if you can find a new, not rebuilt Carter pump and forget about any fuel supply problems for a long time. It might also be a good idea to add a second fuel filter on the supply side of the pump to trap any sediment before it can contaminate the one-way valves in the pump assembly.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!