jts
Well-Known Member
Which is the right cap for a 67 coronet? Went to car show sat. and stopped to fill up with about 1/2 tank of fuel. opened cap and gas blew out on me. When I got home I checked the new cap which I had bought recently. It has a check valve which allows air to come in but don't allow tank to vent to atmosphere. I can only think that the fuel expanding and building pressure caused this and it had no where to go. The cap I ordered was a Stant #10646 I believe, I am thinking I need a vented cap so pressure builds it can vent to atmosphere. Can anyone shed some light on this? Service manual does not cover this that I can find. Thanks jts