Check the channel "Cartoon Network India" or "CN Tamil" – they often upload full episodes in Tamil. Search: Jackie Chan Adventures Tamil | Cartoon Network Tamil
Whether you’re downloading for your own memories or introducing the show to a new generation, ensure you’re doing it safely and ethically. Now go forth, collect those talismans, and remember: Bad day, bad day, bad day! Download Jackie Chan Adventures Tamil
As of last year, Amazon Prime Video added several seasons of Jackie Chan Adventures in multiple Indian languages. Check the "Audio" section. Check the channel "Cartoon Network India" or "CN