I have noticed the last two times I have filled up in my '63 Lark R1, I've made sure I didn't overfill it at the station, drove it several miles, park it awhile, no leaks, then...I'll let the car sit outside in the driveway for several hours, come back, and there'll be a round stain of gasoline leak behind the rear bumper. I'll open the gas cap and gas will come pouring out. Our driveway is on an incline, but I don't fill the car any different than I always have, and have always parked in our driveway.
I'll take the cap off for a minute, the flow of gas appears to stop, I'll put the cap back on for a minute, then take it off again, and again gas will pour out onto the ground.
What the hell's going on? Any ideas? It's like a reverse vacuum of sorts is pushing it out of the tank after the car sits and cools down for awhile.
Any suggestions are appreciated, as my kids like to ride in the car but obviously this is a dangerous situation (it's gonna sit outside for the entire night tonight).
Thanks, Bill Pressler Kent, OH