Theres no way to test a charcoal canister. The charcoal canister is just a filter for the fuel vapors inside your EVAP system. It captures those vapors before they reach the fresh air vent that leads outside into the atmosphere. Think of it kind of like your engine air filter. The engine air filter captures contaminants before they go inside of your engine, but you can't physically test the filter. The only things you can test the charcoal canister for is cracks using a smoke machine or physically seeing any cracks with your eyes. Also, if you remove it, tip it over and see if anything comes out of it. If you see any signs of liquid fuel, then its bad. If any pieces of the inside comes out, then its bad. Usually on these charcoal canisters, it looks like small black pellets that come out.
Tuesday, November 3rd, 2015 AT 6:03 AM