Quote Originally Posted by Steel Warrior View Post
Thanks for the quick response. I just didn't want to drop the tank. Yes, it's parked in a garage. That's why I wanted to do a quick fix. It runs out all the time even going around corners and etc. when full. I thought it was the filler neck. I replaced all that and still leaked. I just jacked up the car and looked and gas was running all over the frame and everything. Looked up and seen a small plastic line clamped to the top of a cross member running back to top of tank. The same level as the top of the tank. Gas pouring out of this line.
With an anti-rollover valve, the vent hose is supposed to be run up to the highest point possible and then arced over to form a loop seal. Some like to put a coil in the vent pipe as opposed to simply arcing over into a "U" or "J". You might try extending your plastic line up to a higher point under the car, and then don't top off the tank when you fill. Leave room at the top for expansion as the fuel warms from it's below grade cool temperature to ambient.