[dr3358]

After all the posts of gas smells, this one I feel is the worst to tackle. After getting a cabin gas smell in my 78 930 I checked out different posts. Like many other porsches, mine has had the majority of the evap system removed/capped. There is no expansion chamber, but the line is capped from the tank to where the expansion chamber is supposed to be. The charcoal canister has the small line (from the tank) which crumbled in my hand as I removed the canister. There is no line to the fan shroud, and actually nothing on the shroud to indicate it ever had a place on which to attach a hose. There is no smell in the engine compartment nor the trunk, not even by the capped expansion tank line. Removing the carpet from the driver side, the smell was definitely coming from the center tunnel. Now the concern is exactly what is leaking since there are more cables and stuff in that tube than just the fuel and venting lines. I noticed that there is a thin line on the drivers side that has gas-smelling grime on it. Is there a schematic of what lines are in there?? and How do you detect just where the leak is? Can it be as simple as vapor in the return line from the charcoal canister???!!!