Fuel tank lines, searched but not sure... Options

[wobbletop]

Hi all,
Just really starting to get to know my 914. Car has always smelled of gas and once my passenger complained of gas at her feet. The previous owner had removed the expansion tank and charcoal canister when he did the 3.0L swap which came with carbs.

I tried to do some debugging today to figure out where the gas was coming from. Only happens (or is noticed) with a full tank. I attached some small bags to the end of the hose that used to attached to the expansion tank, and to the large tube that comes off the "scupper" around the tank filler.

I noticed don't have the large hose that is in this picture that runs off the scupper. I could not find any diagrams for this line anywhere.

(IMG:http://www.914world.com/bbs2/uploads/post-378-1183570635.jpg)

Where does the other end of that hose go?

Anyway... after a short drive with some quick side to side transitions (like warming tires) I stopped and noticed that BOTH bags had gas in them.

Is it normal for the evaporate line to have gas in it?
Where could the gas from the big tube be coming from? The gas cap SEEMS to have a good seal. Also, there doesn't appear to be any gas underneath the scupper. It doesn't appear to be leaking.

I also found this diagram but it doesn't show the large tube on the other side.

(IMG:http://www.914world.com/bbs2/uploads/post-104-1217472597.jpg)

The two hoses that run the length of the car are still in the front trunk, but I'm not sure if they attach to anything in the engine compartment.

Thanks for you help.

[wobbletop]

Thanks all!

I was surprised by the amount of fuel that was coming out of those lines after a short trip.

Found this on ebay... suitable replacement gas cap?

http://cgi.ebay.ca/OEM-Porsche-356-911-912...%3A1|240%3A1318

It seems most likely the gas cap gasket but I'm still surprised at the amount of gas coming out the evaporator line. Especially since it has no path back to the tank.