Gas Cap

[63Fun]

Can anyone confirm if the gas cap on a 62/63 Chrysler is supposed to be vented or not? I have a vented one on there, but if I park on a hill, with the gas tank at the lower point with a full tank, gas will leak out from the gap. Does this mean it should have a non-vented cap?
I just wanted to be sure in case I would over-pressurizing the tank by swapping caps.

The car has the filler in the rear of the car.

Thank you

 

[Polara_500]

Should be a vented tank, but crawl under and look for another tube into the tank up front that runs upward, easy way to check it.

 

[63Fun]

Ya, there's another line that runs alongside the tank and then just ends at an opening forward of the tank itself.

I guess that means I'm safe to put a non-vented gas cap on?

 

[Snotty]

Ya, there's another line that runs alongside the tank and then just ends at an opening forward of the tank itself.

I guess that means I'm safe to put a non-vented gas cap on?

You can try one and see what happens. If it vapor locks on you it's not a good idea.

 

[63Fun]

You can try one and see what happens. If it vapor locks on you it's not a good idea.

I guess I'll give it a shot then.

 

[Snotty]

I used a vented cap on the '62 New Yorker I used to own, and am using one on my '70 Newport now, even though it's not supposed to have one.