{"nhtsa_id":11036452,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-08-28","date":"2026-08-05","document_id":"TSB_ENG263","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":"ENG","summary":"TECHNICAL SERVICE BULLETIN: MISFIRE CONCERN DUE TO OVERRUNNING ALTERNATOR DECOUPLER - This bulletin provides information to address unresolved misfire events on some 2020–2024MY Forte (BDm) produced from January 1, 2019 through September 30, 2024, and 2020–2022MY Soul (SK3) vehicles produced from November 1, 2018 through May 31, 2022 equipped with a Gamma 1.6L T‑GDI engine. In certain cases, misfire symptoms may persist after completing normal diagnostic procedures and replacing ignition‑related components (spark plugs, ignition coils, and fuel injectors). If misfire concerns remain after these repairs are performed, excessive torsional oscillation of the Overrunning Alternator Decoupler (OAD) pulley may be the contributing factor. This bulletin provides the procedure to replace the OAD pulley with the updated Overrunning Alternator Pulley (OAP) kit and associated damper components.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036452-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036452-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036452","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"FORTE","year_from":2020,"year_to":2024,"match":"exact","vehicle_ids":["2020_kia_forte","2021_kia_forte","2022_kia_forte","2023_kia_forte","2024_kia_forte"]},{"make":"KIA","model":"SOUL","year_from":2020,"year_to":2022,"match":"exact","vehicle_ids":["2020_kia_soul","2021_kia_soul","2022_kia_soul"]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}