I just discovered that my gas tank DOES NOT have any vents in it. There is no nipple on the tank to connect the vent hose to. The tank has a vented gas cap on it. The tank builds up a lot of positive pressure so when you remove the cap, there is a rush of vapors out of the tank.
What are my options to correct this? It’s actually bad enough to push gas out around the cap if I fill the car up then it sets in the sun. Is there a different cap I could use or do I just need to put in a correct vented tank? If it matters, this is for a '70 cuda.
Thanks!!