The emission system of the engine produces a lot of carbon emissions which are released into the environment. This is what continues to make gasoline engines so controversial among those who care about protecting the environment.
However, there is a special component called a “charcoal canister” (or evaporative emission control canister) which exists in the emission system that works to absorb the vapor of the fuel before it is released outside into the environment.
In other words, after the engine produces these toxic carbon emissions, the charcoal canister stops these compounds and redirects them back to the fuel tank. That way, the environment can continue to be kept safe from these emissions.
Top 5 Bad Charcoal Canister Symptoms
A dirty or cracked charcoal canister can cause problems for the functionality of your car. You will want to address these problems immediately before they progress into something much worse.
Below are five of the most common signs of a bad charcoal canister to keep an eye out for. Some are worse than others, but you can easily fix them as soon as you spot them.
1) High Emissions
Since a charcoal canister is supposed to eliminate toxic carbon compounds from being released into the environment, a bad charcoal canister is not going to have much luck doing that. This will result in a much higher rate of carbon emissions being released
You may not notice this problem right away as it will require an emissions test to figure it out. If your state forces you to take this test every year or two, then be aware that your charcoal canister could be responsible if you do not pass the test.
2) Fuel Odor
Because a faulty charcoal canister allows fumes to escape, you will likely notice a strong fuel smell near the rear of the vehicle or inside the cabin.These fumes are not something you want to smell for very long because it could make you very sick.
Do not continue driving your vehicle until you confirm it’s the charcoal canister and fix it (or another issue).
3) Pinging Sounds
If your charcoal canister is not effectively disposing of the carbon emissions, this could affect the air and fuel mixture ignition in the combustion chamber. The result will be pinging sounds coming from the engine which you don’t normally hear.
There could be other reasons for these pinging sounds too. But if you experience two or more of the other symptoms on this list, then chances are it may be due to the charcoal canister having problems.
4) Weak Performance
A major symptom which should spark a red flag in your mind is poor engine performance. If the carbon emissions are not being recirculated back into the combustion chamber properly and it causes problems with your air to fuel mixture, then your engine won’t be able to adequately produce the power needed to sustain your acceleration needs.
This means that whenever you step on the gas pedal, you won’t accelerate as fast as you should be.
5) Check Engine Light
While having your check engine light come on can literally mean any one of a hundred or more things can be wrong, if you notice this symptom along with one or two others in this list, you may have a failed charcoal canister that is in need of replacement.
Charcoal Canister Replacement Cost
The replacement cost of a bad charcoal canister will be around $240 and $450. The price range varies considerably because the make and model of your vehicle has a lot to do with the cost.
Generally, you can expect the labor costs to be between $100 and $250, depending on how difficult the charcoal canister is to access. The canister itself typically runs between $140 and $200.