Fuel in the vapor line?

[gdouaire]

Ever seen fuel trapped in a vapor line? I found out there was at least one cup ( 1/4 liter ) trapped in there as it started leaking all of a sudden. And then it stopped. The leak appearing just like that - I can understand a leak appearing just like that, the car is 30 years old and a lot of stuff can happen. But all that fuel in there..?

 

[jociha]

If your vent line is plugged it will fill the vapor line as long as we are talking about the same lines. Vent is smallest, I think 1/4", vapor is 5/16" and fuel is 3/8". If the vent is plugged pressure builds in the tank and pushes gas from the tank up the vapor line.

 

[gdouaire]

The line looks like 3/8" OD. It's on a driver side, so in theory it's the vapour line. Fuel and return are on the passenger side if I recall properly.

 

[gdouaire]

It's actually on the fuel feed line that is on the driver side on my Cutlass. The part of the line that was leaking is inside the chassis rail.