The repair needed involves finding and fixing the leak. This could involve several things, ranging from simple to complex:
* Loose or damaged gas cap: This is the most common cause and the easiest to fix. Simply tightening the gas cap might resolve the issue. If the gas cap is cracked or damaged, it needs to be replaced.
* Leaking fuel filler neck: Cracks or damage in the fuel filler neck (the tube that connects the gas tank to the filler opening) can cause a leak. This may require repair or replacement.
* Loose or damaged EVAP system hoses: The EVAP system has several hoses that can become loose, cracked, or deteriorated over time. These need to be inspected and repaired or replaced as needed.
* Leaking EVAP canister: The canister stores fuel vapors temporarily. If it's cracked or damaged, it needs to be replaced.
* Problems with the purge valve: This valve controls the flow of fuel vapors. A faulty purge valve can cause leaks and needs to be replaced.
* Other less common issues: In rare cases, the leak could be due to a more significant problem, such as a hole in the fuel tank or a faulty sensor.
To diagnose the problem accurately, a mechanic will typically:
1. Check the gas cap: This is always the first step.
2. Use a smoke test: This involves introducing smoke into the EVAP system to visually locate the leak.
3. Perform a pressure test: This measures the pressure in the EVAP system to detect leaks.
4. Inspect all components: Visually inspect hoses, the canister, the purge valve, and other EVAP system components for damage.
It's best to take your Chrysler Town & Country to a qualified mechanic to diagnose and repair the problem accurately. Attempting to fix this yourself without the proper tools and knowledge could lead to further complications. The mechanic will determine the exact cause and perform the necessary repair.
