I had this problem on my 83 Ranger. My pop took it to his friend who
was a teacher a local vocational school so they could check it out (in
case it was a nasty repair) and it turned out to be a small deal ...
the little hose that returns air back out from the tank when you fill
it had worked itself loose and gotten caught, getting stuck on
something or other and causing the stickness.
IIRC, he stuck a screwdriver in the tank or in the hole where the hose
was or something, manouvered it back in place, and epoxyed it.
YMMV, but you might want to find someone who has heard of this and
could give it a shot.
Same thing happened on my 1995 Ranger. Ended up bad sending unit in
fuel tank. You can either keep track of mileage to decide when to fill
up or have the fuel pump and sending unit replaced. The dealer charged
me about $400 for the part and install. Had to remove either the gas
tank or the truck bed to get to it.
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