{"nhtsa_id":10198613,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-07-01","date":"2021-06-08","document_id":"21B26-S1","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"In some of the affected vehicles, the engine's secondary timing chain tensioner may not have been properly activated during assembly, which could result in a timing loss. Timing loss could lead to internal engine damage, a rough running engine , and engine misfires.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198613-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10198613-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10198613","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"MUSTANG","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_ford_mustang"]}],"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":[]}