{"nhtsa_id":612551,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-06-08","date":"2000-03-09","document_id":"00300R","mfr_campaign":null,"replaces":"0100300","component":"ENGINE AND ENGINE COOLING:ENGINE:GASOLINE","mfr_system":null,"summary":"SOME VEHICLES MAY EXHIBIT AN ENGINE KNOCK NOISE THAT CAN BE HEARD OUTSIDE THE VEHICLE AT APPROXIMATELY 800 - 1400 RPM AFTER THE ENGINE REACHES OPERATING TEMPERATURE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/612551","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MAZDA","model":"626","year_from":1999,"year_to":1999,"match":"exact","vehicle_ids":["1999_mazda_626"]}],"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":[]}