In 1970 Ford started using charcoal canisters on cars sold in California. In 1971 they improved the system and put it on all cars. Initially it just worked on the fuel tank vent. As regulations became more stringent they had to pull vapor from the carb bowl vents as well. I'm not sure when this occurred, but as late as 1973 they still hadn't made any connections to the carb vents. My car is in good repair and I don't have any leaks, but if you run the car it will stink-up the garage for at least a week, and then it stops. Since nothing is changing with the fuel tank vent I have to assume the stink continues until the gas in the carb bowl evaporates. So that got me thinking about all you guys with EFI- do your cars stink-up the garage? The major contributor (the carburetor) has been eliminated. All that's left is the tank, and since it doesn't get that hot and the fuel is well contained, it shouldn't stink- at least mine doesn't. I'd appreciate hearing from you guys.