gas cap

[jts]

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

 

[Fran Blacker]

This might be what you need.
Not mine.
http://www.ebay.com/itm/62-67-Mopar...ash=item2128205c6f:g:dlsAAOSw-3FZN25C&vxp=mtr

 

[jts]

Thanks Fran, I will try that. jts

 

[Fran Blacker]

Don't know when they went to non-vented caps, 68/69? The vent tube is that 3/4" tube that's by your filler neck. That's so when you fill your tank it doesn't spit back. My 66 is a slow fill because of all the bends, same as yours.

 

[jts]

The way I am looking at it there is no other way for the tank to vent except through the cap. jts

 

[67 coronet]

i got the stant cap and removed the plastic vent out of it.works great on my 67 now.used to build presure like crazy with this ethanol fuel you get today.

 

[jts]

Thanks everyone, I think I have it taken care of. jts