This technical training manual provides in-depth information on Mazda diesel fuel injection systems. It specifically covers advanced diesel engine management training for the Zexel injection pump system found in the B2500 UN, utilizing WL-3 or WLT-3 engines, and the Denso injection pump system for the 323 BJ and 626 GF models. This manual focuses on the engineering and maintenance of these critical components, designed to ensure optimal performance and reliability of your Mazda vehicle.

The purpose of this English-language manual is to serve as a comprehensive resource for understanding and servicing diesel injection pump systems. It details maintenance procedures, technical specifications, and troubleshooting guidance essential for owners, mechanics, and technicians. By providing clear and accurate information, this manual aims to facilitate the proper upkeep and repair of the covered fuel injection systems, ensuring the continued efficiency and longevity of your Mazda.