ENGINE MAKERS TO SEEK DELAY OF CARB HEAVY-DUTY DIESEL OBD RULE

Heavy-duty diesel engine makers are expected to seek a delay or relaxation of a draft California Air Resources Board (CARB) regulation requiring 2010 engines to meet advanced on-board diagnostic (OBD) specifications that improve emission controls. Engine makers say they are burdened with meeting new state and national 2007 engine emission standards, and the air board should harmonize with a federal OBD rule being developed that would start later. CARB's proposed OBD rule for heavy-duty engines aims to advance OBD systems...