{"nhtsa_id":615270,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-01-10","date":"1998-08-01","document_id":"11769","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT BRIEF SPARK KNOCK ON ACCELERATION DURING HOT WEATHER ONCE THE ENGINE HAS THOROUGHLY WARMED UP. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/615270","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"ESCORT","year_from":1991,"year_to":1998,"match":"exact","vehicle_ids":["1991_ford_escort","1992_ford_escort","1993_ford_escort","1994_ford_escort","1995_ford_escort","1996_ford_escort","1997_ford_escort","1998_ford_escort"]},{"make":"MERCURY","model":"TRACER","year_from":1991,"year_to":1998,"match":"exact","vehicle_ids":["1991_mercury_tracer","1992_mercury_tracer","1993_mercury_tracer","1994_mercury_tracer","1995_mercury_tracer","1996_mercury_tracer","1997_mercury_tracer","1998_mercury_tracer"]}],"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":[]}