Re: Fuel pump problem, do I have two?
hey skid- you do have 2 pumps, but heres the REAL problem: you say you think that your front tank is filling from the rear? your prob. right.. I have a 94 f-150 and know this from exp. there are checkvalves in each pump, and the 2 pumps are plumbed parallel (with just 2 "Y's" connecting both pumps to the same line; when one is pump is working, the line is pressurised and the only thing keeping the other tank from filling is its checkvalve.. when it goes, you need to replace the pump.(it seems like its always the front) NOW.. the CAUSE.. I'll bet $50 that your fuel pressure regulator is worn out, and sending too much pressure to the return circuit, overwhelming the checkvalve i.e. filling the tank. (p.s. dont take the bet, im sure of this) if you change the front pump, do the regulator FIRST.. or there will be a third pump in your future. good luck man