- 1). Locate the charcoal canister. The canister is a black cylinder, commonly installed in one of the engine compartment corners.
- 2). Visually inspect the canister. Make sure there are no obvious cracks or openings along its exterior.
- 3). Attach a handheld vacuum pump to the purge valve residing on the canister's topside.
- 4). Turn the hand pump on and observe the valve. A properly functioning canister and purge valve assembly will react to the hand pump by opening the valve's assembly.
- 5). Listen and look at the purge valve as the hand pump remains on. The valve should stay open, but no vacuum should leak from the canister in the process. Replace the purge valve and canister configuration if a vacuum leak is detected.
- 6). Detach the hand pump from the purge valve. Turn the car on in park and allow it to idle. Observe the engine compartment. Verify that there are no fumes emanating from the canister.
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