Okay, thanks for the reply! I found out why the gas tank was not relieving the pressure. Turns out the hose from the valve on the tank was pinched between the frame and fuel line.
I was doing more research and withheld key information out of ignorance. I recently bought this car. It was sitting for a few years and before that, it was in a barn from 2001 -2014. I also noticed a slight whining noise from the fuel pump. I know I could just check the fuel pressure but just decided to get a new pump. (They are about $40. With shipping) Since it is highly likely for a pump to fail if a car sits for a long time and the gas goes bad.
Also, I didn't care to drop the whole tank. I chose to locate the pump and cut the sheet metal from above with an angle grinder. So much easier, and I will weld a hinge and latch to make future repairs easier. Planning on cleaning the tank out too.
I will update as soon as I replace the pump, most likely next weekend.
Attached are pictures for anyone who happened upon this.
Images (Click to make bigger)
Saturday, April 23rd, 2022 AT 9:05 PM