Hi,
First of all I would like you to please excuse my poor use of English. It is not my first language.
I would like to get the complete vacuum schematic for the Evaporative Fuel Charcoal Canister System (EVAP) for a 1977 Corvette (Evap System Federal 49-state, low altitude, CLA Automatic Transmission). Engine code L48 with Rochester carb, Quada-jet M4MC #17057202.
According to the 1977 Chev service manual, it is supposed to have a canister purge valve and a spring in the canister. But, there is none on mine.
How does it work?
How do I test it?
Any information is greatly appreciated.
Thank you.
