Your local auto parts store can help you with parts necessary to build/replace the fuel line. Original fuel line assembly from the dealer is no longer available.
In the tank
No relay on this model. You may have a plugged fuel filter or a fuel pump that is getting weak.
The fuel pump is in the fuel tank and the fuel tank will have to be removed to access it. If you do not have the skill or equipment to do this properly, I suggest taking it to a shop.
Under the car by the left rear wheel next to the gas tank.
Its under the gas tank in a 93. Mine just went bad!
try bypassing the fuel pump, and directly injecting fuel, this will tell you if the problem is the pump, the lines, or further ahead
Its a common problem, generally because the fuel pump is dead, or the fuel filter is clogged.
This is a Ford Bronco II section - my first suggestion is to get rid of the Oldsmobile, or post your questions in an OLDSMOBILE section
it should be a 15 mm bolt. that's what it is on my 91 cutlass supreme and my 93 beretta.
The reset switch for the fuel pump is generally located in the trunk of the car although some are under the dash on the drivers side of the car . Check your owners manual for a specific location .
Underneath your hood, behind the passenger side headlight, behind the core support, is a bank of 2-8 relays. One of those relays is the relay needed for your fuel pump. There will also be a fuel pump relay fuse located there.
Not much info to go on but start with replacing the fuel filter.