{"nhtsa_id":614140,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2000-09-29","date":"2000-02-01","document_id":"IB00S004","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"ISUZU HAS DEVELOPED NEW ENGINE EXHAUST VALVES, GUIDES, AND SEATS TO IMPROVE THE DURABILITY OF EXHAUST VALVES USED IN MODELS EQUIPPED WITH 2.3L (1986 - 1995) AND 2.6L (1988 - 1995) 4ZD1 AND 4ZE1 ENGINES. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/614140","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ISUZU","model":"AMIGO","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"ISUZU","model":"PICKUP TRUCK","year_from":null,"year_to":null,"match":"base","vehicle_ids":[]},{"make":"ISUZU","model":"RODEO","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"ISUZU","model":"TROOPER II","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]}],"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":[]}