if there is sludge in the tank besides having it boiled out, the sock filter on the pick up line might be bad. maybe its letting sludge in and causing havoc on the fuel pumps youre using. you can take out the gas gauge from the trunk and maybe clean it up a bit and get it to work or at least from that opening youll be able to see whats in the tank some. i got an 82 supra for free that was sitting for longer and i got most of the kinks worked out. if you turn the car on there should be a check connector that you short and its by the air flow meter thatll let you know if the pump is running. hope this helps!
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