This manual covers the MazdaMazdaSpeed3, a performance-oriented compact hatchback produced for the 2004 model year. Known for its distinctive sporty design and driver-focused engineering, the MazdaSpeed3 (BK chassis code) is powered by a 2.3-liter MZR DISI Turbo engine, delivering an impressive 263 horsepower and 280 lb-ft of torque. Key features include a standard 6-speed manual transmission, a helical limited-slip differential for enhanced traction, and a sport-tuned suspension. This vehicle was designed to compete in the enthusiast market, offering a blend of exhilarating performance and practical hatchback versatility, building upon Mazda's legacy of creating engaging driving experiences. This comprehensive workshop service and repair manual is designed for professional technicians and advanced DIYers. It provides in-depth coverage of all major vehicle systems, including the powertrain, drivetrain, chassis, electrical components, and body. Detailed procedures for routine maintenance, diagnostics, troubleshooting, and complete repair or rebuild of components are included. Specific guidance is provided for common maintenance tasks, such as oil changes, filter replacements, and spark plug service, as well as addressing known issues like potential carbon buildup and turbocharger maintenance. With over 1500 pages of information, this manual serves as an essential resource for ensuring the optimal performance, reliability, and longevity of your MazdaSpeed3. 🏷️ Basic Information Identification Make: Mazda Model: MazdaSpeed3 Year: 2004 Codes Chassis Code: BK Engine Code: MZR DISI Turbo L3-VDT Generation Generation Designation: 1st Generation (BK) 👋 Introduction Market Position Segment: Compact Performance Hatchback Target Demographic: Enthusiast drivers seeking a sporty and practical vehicle with a focus on performance. Competitive Analysis Key Competitors: Volkswagen GTI, Subaru Impreza WRX, Honda Civic Si, Mitsubishi Lancer Ralliart Key Features Performance Focus: turbocharged engine, sport-tuned suspension, optional limited-slip differential Practicality: Hatchback body style offering versatile cargo space 📋 Manual Details Coverage Areas Primary Coverage: Workshop Service and Repair Target Audience: Professional Technicians and Advanced DIYers Page Count Estimated Page Count: 1500+ Manual Type Type: Service Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Powertrain: Engine, Fuel System, Ignition System, Exhaust System, Transmission (Manual) Drivetrain: Front Wheel Drive (FWD), Limited Slip Differential (LSD) Chassis: Suspension (Front & Rear), Steering System, Braking System (Front & Rear), Wheels & Tires Electrical: Engine Control Module (ECM), Body Control Module (BCM), Lighting, Instrumentation, Audio System, HVAC Controls, Power Accessories Body And Interior: Body Panels, Doors, Glass, Seats, Trim, Safety Restraints (Airbags) Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Spark Plug Service, Coolant Service, Brake Fluid Flush, Transmission Fluid Change Diagnostics And Troubleshooting: Fault Code Diagnosis (OBD-II), Symptom-Based Troubleshooting Guides, Diagnostic Procedures for All Major Systems Repair And Rebuild: Engine Rebuild Procedures, Transmission Overhaul, Suspension Component Replacement, Brake Caliper Rebuild, Turbocharger Service Component Replacement: Turbocharger, Injectors, Ignition Coils, Alternator, Starter Motor, Radiator, Water Pump, Clutch Assembly, CV Axles, Brake Pads/Rotors Technical Depth Depth: Comprehensive; Covers everything from routine maintenance to complete engine and transmission overhauls, including detailed electrical schematics and diagnostic procedures. 📊 Manual Specifications File Format File Type: PDF Searchability: Yes, text-searchable for quick information retrieval Print Quality Quality: High-resolution scans, suitable for printing Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline-4, DOHC, 16-valve, Turbocharged and Intercooled Displacement: 2.3 Liters (2261 cc) Performance Horsepower: 263 hp @ 5500 rpm Torque: 280 lb-ft @ 3000 rpm Fuel System Fuel Delivery: Direct Injection (DISI - Direct Injection Spark Ignition) Recommended Fuel: Premium Unleaded Gasoline (91 octane or higher recommended) Turbocharger Turbo Model: Mitsubishi TD04-15G or similar 🔧 Transmission Standard Transmission Type: 6-Speed Manual Transmission Optional Transmission Type: None (Manual transmission only) Features Differential: Standard Helical Limited Slip Differential (LSD) Fluid Specifications Manual Transmission Fluid: GL-4 75W-90 Synthetic Gear Oil (e.g., Mazda Genuine Gear Oil) 📐 Dimensions Exterior Length: 176.0 inches (4470 mm) Width: 70.1 inches (1780 mm) Height: 57.9 inches (1470 mm) Wheelbase: 104.1 inches (2645 mm) Weights Curb Weight: 3152 lbs (1430 kg) Gross Vehicle Weight Rating: 4233 lbs (1920 kg) 🛡️ Safety Features Ratings NHTSA Frontal Driver: 5 Stars NHTSA Frontal Passenger: 5 Stars IIHS Front Crash Rating: Good Active Features ABS: Yes, 4-wheel Anti-lock Braking System Traction Control: Yes, Electronic Traction Control System (TCS) Stability Control: Yes, Dynamic Stability Control (DSC) Passive Features Airbags: Frontal airbags, Side-impact airbags, Curtain airbags Seatbelts: 3-point front and rear seatbelts with pretensioners and load limiters 💡 Technology Features Infotainment Audio System: Standard AM/FM stereo with CD player, optional Bose premium audio system. Climate Control: Manual or automatic climate control depending on trim level. Driver Assistance Cruise Control: Standard cruise control Connectivity Auxiliary Input: Standard auxiliary audio input jack 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles (8,000 km) or 6 months, whichever comes first. Air Filter Replacement: Every 30,000 miles (48,000 km) or as needed based on driving conditions. Cabin Air Filter Replacement: Every 15,000 miles (24,000 km)...