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.

[SirAndy]

I noticed don't have the large hose that is in this picture that runs off the scupper.
Where does the other end of that hose go?

Without that large hose, fuel spilled when filling the tank will simply run down the outside of the tank. That hose goes out the bottom of the car to safely dispose of any spilled fuel.

Your real problem is that when the PO removed the expansion tank, he most likely did not do anything with the much smaller vent hose.
This is where your car will leak fuel when the tank is full.


On my car, after i removed the expansion tank, i made sure the large hose goes through the bottom hole and sticks out 1/2" or so, then i took the small vent hose and stuck it INSIDE the larger hose.
That way, if i have a full tank and something comes out the vent hose, it'll simply drip down the large hose and exit on the bottom.

I still get the fuel smell every once in a while, but at least i don't have gasoline inside my car ...
(IMG:style_emoticons/default/shades.gif) Andy