The Mazda 323 Protege, internal model code BG, represents a reliable and practical compact car produced for the 1990 and 1991 model years. Known for its fuel efficiency, affordable ownership, and a design that reflects the aerodynamic trends of its era, the 323 Protege was a competitive offering in its segment. It featured a choice of a 1.6L SOHC or a more powerful 1.8L DOHC engine, coupled with either a 5-speed manual or a 4-speed automatic transmission. The vehicle's engineering prioritizes dependable performance, making it a sensible choice for everyday transportation. This comprehensive workshop and service repair manual provides complete coverage for the Mazda 323 Protege (BG) models from 1990-1991. It details all essential maintenance procedures, including scheduled service, fluid checks, and component replacements, alongside in-depth repair instructions for all major vehicle systems. Covered areas include the engine, transmission, drivetrain, suspension, brakes, electrical systems, and body. The manual also offers valuable troubleshooting guidance, diagnostic charts, and technical specifications such as torque values and wiring diagrams, empowering owners and technicians to effectively maintain and repair the vehicle. 🏷️ Basic Information Identification Make: Mazda Model: 323 Protege Years Covered: 1990, 1991 Codes Internal Model Code: BG 👋 Introduction Market Position Segment: Compact Car / Affordable Sedan/Hatchback Competitive Analysis Key Competitors: Honda Civic, Toyota Corolla, Nissan Sentra, Ford Escort, Hyundai Elantra Key Features Vehicle Attributes: Reliability, fuel efficiency, practical design, affordable ownership Manual Value Benefit: Empowers owners and technicians with in-depth knowledge for accurate diagnosis and repair. 📋 Manual Details Coverage Areas Primary Coverage: Complete Service and Repair Page Count Estimated Page Count: Varies by specific edition, typically 500+ pages Manual Type Type: Workshop Manual / Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Full engine mechanical, cooling, lubrication, fuel, ignition, emissions control Transmission: Manual and Automatic transmission overhaul, repair, and adjustments Drivetrain: Front-wheel drive, driveshafts, CV joints, differential Suspension: Front and rear suspension components, steering system, alignment Brakes: Hydraulic system, disc and drum brake service, parking brake Electrical: Full electrical system diagrams, battery, charging, starting, lighting, accessories, ECU troubleshooting Body: Body panels, doors, glass, interior trim, HVAC system Chassis: Frame and chassis components, exhaust system Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks Repair: Component removal, installation, adjustment, and rebuilding Troubleshooting: Diagnostic charts, symptom-based problem solving, fault code identification Technical Specifications: Torque specifications, clearances, tolerances, wiring diagrams Technical Depth Depth: Comprehensive, suitable for professional mechanics and advanced DIYers 📊 Manual Specifications File Format Quality: High-resolution, searchable text, printable Print Quality Quality: Industry standard for technical documentation Binding Type Type: N/A (Digital PDF) Paper Type Type: N/A (Digital PDF) ⚙️ Engine Specifications Primary Engine Engine Code And Type: 1.6L (B6) SOHC Inline-4, 1.8L (BP) DOHC Inline-4 (market dependent) Performance 1.6L Horsepower: Approximately 88-95 hp @ 5500-6000 rpm 1.6L Torque: Approximately 90-95 lb-ft @ 3500-4000 rpm 1.8L Horsepower: Approximately 125-130 hp @ 6000 rpm 1.8L Torque: Approximately 125-130 lb-ft @ 4500 rpm Fuel System Type: Electronic Fuel Injection (EFI) Cooling System Capacity Liters: Approx. 6.1 L (with heater) Lubrication System Oil Capacity Liters W Filter: Approx. 3.7 L for 1.6L, 4.0 L for 1.8L Ignition System Type: Distributorless Ignition System (DIS) or Distributor-type (market dependent) 🔧 Transmission Standard Type: 5-Speed Manual Optional Type: 4-Speed Automatic Features Automatic Transmission Fluid Spec: Dexron III or equivalent Manual Transmission Fluid Spec Type: API GL-4, SAE 75W-90 📐 Dimensions Exterior Wheelbase Mm: 2500 mm (approx.) Length Mm: 4315 mm (approx.) Width Mm: 1675 mm (approx.) Height Mm: 1375 mm (approx.) Weights Curb Weight Kg: Approx. 1050-1150 kg (depending on trim/engine) Gross Vehicle Weight Rating Kg: Approx. 1500-1600 kg Cargo Trunk Volume Liters: N/A (Varies by body style - Sedan/Hatchback) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: Not rated or varies by market/year NHTSA Front Impact Passenger: Not rated or varies by market/year Active Features ABS: Optional on some trims Passive Features Airbags: Driver airbag standard on some later models, passenger airbag uncommon Seatbelts: Front 3-point, rear lap and shoulder belts 💡 Technology Features Infotainment Audio System: Factory AM/FM Cassette player, optional CD player Display: Basic analog gauges, climate control knobs Driver Assistance Cruise Control: Optional on higher trims Connectivity Features: N/A (Pre-OBD-II era, basic diagnostics) 🔧 Maintenance Service Intervals Engine Oil And Filter Miles: Every 5,000-7,500 miles or 6 months Transmission Fluid Change Miles: Every 30,000-60,000 miles (varies by usage) Coolant Flush Miles: Every 30,000-50,000 miles or 2-3 years Spark Plugs Miles: Every 30,000-60,000 miles (depending on plug type) Fluid Specifications Engine Oil Viscosity: 10W-30 or 5W-30 (check owner's manual for climate suitability) Brake Fluid Type: DOT 3 Power Steering Fluid Type: Dexron III or ATF (check manual) Known Issues Common Problems: Rust (especially in salt-belt regions), worn engine mounts, aging suspension bushings, fuel injector clogging, minor electrical gremlins, clutch wear (manual transmission) Common Repairs Typical...