Good point Chris, I was thinking he meant the gas flow while putting in gas not the quantity.
If the gas is flowing slow it might be the air vent on the fill tube.
PITA to fix, take out the fill tube check and clean the vent tube, check for cracks while it is out.
You might take some compressed air, low pressure and blow back in the vent tube but remember it is junk plastic and may break if too much pressure is used.
If it is as Chris has stated just to much fuel consumption, join the club, luck to ya !
4x4, 5sp, Std Cab, Stepside, E4 Red
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