I don't get any neg or pos pressure in my tank but after filling up fuel fumes until the tank goes down to about half full, any ideas?
I would check as Bud suggests but I've had two mogs that did this. Both had micro splits along the top seams.
I found it by taking out the tool tray. Fill the tank. Run kitchen towel along the seams around the top of the tank and you'll locate the tiny leaks.
Nick
