{"nhtsa_id":50758,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-06-17","date":"1996-11-14","document_id":"BC0477961114","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION","mfr_system":null,"summary":"ENGINEERING IS INVESTIGATING DEALERSHIP CONCERNS WITH FOULED OR CRACKED SPARK PLUGS. *TW","document":null,"url":"https://open.wenmarpro.com/bulletins/50758","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"ECONOLINE","year_from":1997,"year_to":1997,"match":null,"vehicle_ids":[]},{"make":"FORD","model":"EXPEDITION","year_from":1997,"year_to":1997,"match":"exact","vehicle_ids":["1997_ford_expedition"]},{"make":"FORD","model":"F-150","year_from":1997,"year_to":1997,"match":"exact","vehicle_ids":["1997_ford_f-150"]}],"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":[]}