Is it 'Creep' or is it a clarification?

[tnord]

i want to make sure i understand their function first.

is it just two vacuum lines, one from the fuel tank all the way up to the engine compartment that feeds this little black cylinder with some sort of filtering mechanism to scrub the vapor of the nastyness, then a return line back to the tank?

mine is still in the car as well, though i'd be happy to remove it for the same reasons as andy.

[Rabbit07]

There were charcoal canisters on cars from the late 70's in some cases. I have owned a few GM cars from 78- that had canisters with Carbs on them. I know that the CJ Jeeps used to have an issue with the Charcoal ending up in the carb and clogging it. The sealed systems with leak detection pumps started with OBD-II. That was when you started getting codes for not putting your fuel cap on nice a tight.

Eitherway I am sure California emission cars would have had any of this stuff first. Growing up in Orange County, my 67 Mustang had an Air Pump on it.