This service repair manual covers the Mazda BP-DOHC engine, designed for various model years. Known for its engineering quality and reliability, the BP-DOHC engine has been a staple in many Mazda vehicles, offering a balance of performance and efficiency. This manual is intended to provide comprehensive information for maintaining and repairing this specific engine. This extensive English-language manual details everything from engine identification procedures and general precautions to complete disassembly and assembly instructions. It includes in-depth coverage of the engine body, fuel system, cooling system, exhaust system, and electrical components such as the alternator and regulator, along with wiring diagrams. With hundreds of photos and illustrations, it serves as an invaluable resource for both DIY enthusiasts and professional mechanics, offering troubleshooting guides, maintenance checklists, servicing specifications, and special tool information to ensure the vehicle remains in optimal working condition.