5 Signs Youre Due for a Charcoal Canister Replacement

Reading Time: 4 minutes

If your vehicle displays any of the following symptoms, there’s a good chance your charcoal canister needs replacement:

• Poor engine performance
• Difficulty refueling and a hissing noise from the fuel tank
• Fuel smell in the vehicle’s interior
• Increased emissions
• Illuminated check engine light

What Does A Charcoal Canister Do?

The charcoal canister helps minimize the toxic emissions after burning fuel. It accomplishes this by absorbing the toxic vapors that accumulate in the gas tank.

Whenever you refuel your vehicle, the fuel tank is vented to the charcoal canister. The canister then captures any gas fumes to prevent toxic vapors from escaping into the atmosphere.

The charcoal canister sends the vapors it captures to the engine via the purge valve. From this valve, the toxic fumes are burned to power the engine further.

Where Can The Charcoal Canister Be Found?

The charcoal canister in a car is underneath the hood or the vehicle.

The charcoal canister in a car is underneath the hood or the vehicle. It can usually be found fitted between the fuel tank, the intake manifold, and the carburetor.

The canister is distinct due to its black color and large volume. It’s connected to the fuel tank along with other hoses and valves. Together, these parts make up the evaporative control system, also known as the EVAP system.

Signs You Need to Get Your Charcoal Canister Replaced

A damaged charcoal canister is something drivers need to take seriously. Not only would you be exposed to nauseous, toxic fumes, but you’d also be exposing pedestrians and passersby to the harmful gasses.

Here are some telltale signs to help you discern whether it’s time to replace your charcoal canister.

Poor Vehicle Performance

If you’ve noticed weak engine performance in your vehicle, there’s a good chance it’s because there’s something wrong with the charcoal filter in your car. Generally, if the carbon emissions from used fuel don’t circulate properly, they can throw the air-to-fuel ratio off-balance.

In short, a faulty charcoal canister can prevent your vehicle’s engine from producing the power necessary to accelerate. If your vehicle doesn’t accelerate as fast as it normally does, it might be time to replace your charcoal canister.

Difficulty Filling Fuel Tank

If you struggle with refueling your car because the hose nozzle shuts off randomly, you could chalk it up to faulty fuel canisters.

This incident occurs when the charcoal canister gets clogged. Because the fumes can’t escape, pressure builds up in the fuel tank. A loud hissing noise indicates the pressure, which triggers when you open the cap to the fuel tank.

This buildup prevents you from refueling your vehicle because the gas in the tank needs to escape before any fuel comes in. Because the gas in the tank can’t escape through a clogged canister, fuel can’t enter the tank.

Vehicle Reeks of Fuel

Your car cabin could smell of fuel when toxic fumes from burnt fuel leak from broken canisters. The fumes escape into the atmosphere.

A strong fuel smell is one of the more dangerous symptoms of a broken fuel canister, as it can make people sick if left unresolved.

Increased Emissions

The charcoal canister is responsible for eliminating toxic carbon compounds and preventing them from entering the atmosphere. If it fails, the vehicle’s emissions increase. It’s why something might be wrong with your charcoal canister if your vehicle starts failing emissions tests.

Lit Check Engine Light

The easiest way to tell if something is wrong with your charcoal canister is to see if the check engine light is on. However, remember that a lit check engine light doesn’t necessarily mean there’s something wrong with the charcoal canister, so you’ll have to confirm the issue.

How Long Does A Charcoal Canister Last?

Charcoal canisters can last as long as your vehicle with proper maintenance.

Charcoal canisters can last as long as your vehicle with proper maintenance. Of course, it can fail ahead of time due to various reasons. For a more exact figure, a charcoal canister could last up to seven years before needing replacement.

A great way to improve your charcoal canister’s longevity is to have it cleaned at least once every 15,000 miles.

How Much Does A Charcoal Canister Replacement Cost?

On average, a brand-new charcoal canister costs between $140 to $200 depending on the model, but drivers of high-end cars might need to fork over up to $300.

This doesn’t account for the labor costs to have it replaced by a professional. Hiring someone to replace a faulty charcoal canister could cost you between $240 and $300.

How Long Does It Take to Replace a Charcoal Canister?

On average, a skilled mechanic should be able to repair or replace a vehicle’s charcoal canister in about an hour. It could take longer, depending on the vehicle’s size and complexity.

The post 5 Signs You’re Due for a Charcoal Canister Replacement appeared first on In The Garage with CarParts.com.

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