5 Easy Steps to Installing a New Vapor Canister
Also known as the charcoal or EVAP canister, the vapor canister is a device that reduces carbon emissions and increases fuel efficiency. Normally, vapor canisters do not require service beyond keeping it clean and free of debris, although cracks and deterioration on the canister body may cause it to lose pressure and fail. And once it starts to show signs of failure, the vapor canister must be replaced immediately to prevent fire, explosions, and other incidents due to the outside air mixing with the fuel vapors in the canister.
Required skill level: Novice
Needed tools and materials:
Prepping the vehicle
With the car parked on level ground and the ignition safely turned off, pull out the fuel system relay. You can refer to the car's user manual for the location of the fuel system relay, although it is usually marked as C/Opn on the relay panel. Once the relay is detached from the system, turn on the ignition. Allow the engine to run until it uses all of its fuel and stops. Disconnect the battery cable.
Propping it up
Lift the rear of the car with jacks and place jack stands on each side underneath the frame. Slowly lower the car into the stands and slide a chock or a brick in the front tires to keep it from moving.
Finding and removing the old canister
The location of the vapor canister varies from one vehicle to another, although it is often located near the fuel tank. Once you've found the canister, pull out the hoses that attach it to the fuel tank. The hose is usually secured by a clamp, so use a pair of pliers to slide the clamp down the hose until it comes loose. Once the clamp is out of the way, take off the hose. Unscrew all the mounting bolts securing the vapor canister in place with the socket wrench. If the canister is held in place by a clamp, a screwdriver should be used to pry the canister off the clamp.
Installing the new canister
With the old canister out of the way, take your new canister and slide it into position next to the fuel tank and bolt or clamp it down and place. If the canister is held by mounting bolts, we recommend inserting all the bolts first so that the canister is held firmly while you tighten down the bolts. Reattach the hoses to the canister and slide the clamps back into the hoses.
Replace the fuel system relay and remove the jacks and chocks or bricks on the wheels. Reattach the battery battery cable, start the engine, and take the vehicle for a test run to see if the canister has been installed properly.