fuel

Charcoal Canister

for 2017 Dodge Viper 8.4L V10 · RWD

Difficulty

Easy

Time

1.0 h

Tools

Steps

✓Fact-checked. Built from OLP's spec database, then independently fact-checked line by line with every correction applied. Master-tech sign-off by Chris Hackleman is queued. Cross-check torque values against the factory manual, and stop if anything looks unsafe. How our data is made.

Remove and replace the EVAP charcoal canister, which stores fuel vapors from the tank to prevent emissions.

Warnings

⚠Work on a cold vehicle. The exhaust system and rear differential may retain heat for extended periods.

⚠Fuel vapors may be present in EVAP lines. Work in a well-ventilated area away from ignition sources.

ℹ️The charcoal canister is a sealed unit and cannot be cleaned or serviced. Replacement is the only repair option.

Tools required

10mm socket and ratchetEssential

Flathead screwdriver or trim toolEssential

Jack and jack standsEssential

Wheel chocksEssential

Safety glassesEssential

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Parts

EVAP charcoal canister × 1 — Use OEM specification

As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.

Preparation

Park vehicle on level ground and apply parking brake.
Place wheel chocks at front wheels.
Allow exhaust system to cool completely if vehicle was recently driven.
Raise rear of vehicle and support securely on jack stands rated for vehicle weight.
Verify vehicle is stable before working underneath.

Procedure

1
Locate the charcoal canister
The EVAP charcoal canister is mounted underneath the rear of the vehicle near the fuel tank assembly. It is a black cylindrical or rectangular canister with multiple vapor hoses connected to it. Verify exact location against factory service documentation for this platform. It is a black cylindrical or rectangular canister with multiple vapor hoses connected to it.
2
Disconnect the EVAP purge line
Locate the purge line connection (the line running toward the engine and purge solenoid). Press the release tab on the quick-connect fitting and pull the line straight off the canister port. If the fitting is stiff, gently wiggle while pulling. Verify port location against factory service documentation. If the fitting is stiff, gently wiggle while pulling.
3
Disconnect the vent line
Locate the vent line connection (typically on the opposite end from the purge line). This line runs to the fuel tank vent valve. Press the release tab on the quick-connect fitting and disconnect the line from the canister.
4
Disconnect fresh air inlet
The fresh air inlet allows atmospheric air into the canister. This may be a rubber hose with a clamp or another quick-connect fitting. If clamped, use a flathead screwdriver to loosen the clamp and slide it back on the hose, then twist and pull the hose off. If a quick-connect, release the tab and disconnect.
5
Remove canister mounting fasteners
The canister is secured to a mounting bracket, strap, or clip. Identify the retaining fasteners or clips (commonly 10mm bolts if bolted) and remove them completely with the appropriate tool. Verify exact fastener count and size against factory service documentation. Support the canister as you remove the final fastener to prevent it from falling.
6
Remove the canister
Once all lines and fasteners are disconnected, carefully lower the canister from its mounting bracket. Maneuver it out from underneath the vehicle, being mindful of surrounding components like the exhaust and fuel tank.
7
Inspect mounting hardware and lines
Check the mounting bracket for damage or corrosion. Inspect all EVAP line connections and quick-connect fittings for cracks, damage, or debris. Clean the mounting area if necessary. Verify the new canister matches the original in configuration and connection points.
8
Install new charcoal canister
Position the new canister into the mounting bracket, aligning the mounting holes. Install the 2 mounting fasteners and tighten snugly with a 10mm socket. Ensure the canister is secure and properly seated in the bracket.
9
Reconnect fresh air inlet
Reconnect the fresh air inlet hose to the appropriate port on the new canister. If using a clamp, slide it into position over the connection and tighten securely. If using a quick-connect, push firmly until you hear or feel a click.
10
Reconnect vent line
Push the vent line quick-connect fitting onto the canister nipple until it clicks into place. Tug gently on the line to verify it is locked securely.
11
Reconnect purge line
Push the purge line quick-connect fitting onto the canister nipple until it clicks into place. Tug gently on the line to verify it is locked securely.

Reassembly

Lower vehicle from jack stands.
Remove wheel chocks.

Verification

Start the engine and allow it to reach operating temperature. Check for any EVAP-related diagnostic trouble codes using a scan tool.
Visually inspect all EVAP line connections at the canister for proper seating and no signs of vapor leaks.
Verify no check engine light is illuminated related to EVAP system (P0440-P0456 codes).
Perform an EVAP system leak test with a scan tool if available, or monitor for codes over the next several drive cycles.

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