🏷️ Basic Information Identification Make: Mazda Model: Miata Generation: NA (First Generation) Codes Engine Code 1991 1992: B6ZE (1.6L DOHC) 👋 Introduction Market Position Target Audience: Enthusiasts, DIY mechanics, and professional repair shops looking for in-depth maintenance and repair information for the early NA Miata. Competitive Analysis Value Proposition: Provides significant cost savings on repairs and maintenance by empowering owners to perform tasks themselves. Key Features Comprehensiveness: One of the most thorough resources available for the 1991-1992 Miata, covering virtually every aspect of the vehicle. Usability: Designed for ease of use with clear instructions, diagrams, and a logical structure. 📋 Manual Details Coverage Areas Primary Coverage: 1991-1992 Mazda Miata (NA) Secondary Coverage: Covers all trim levels and engine variants for the specified years. Page Count Estimated Page Count: Over 1500 pages (estimated for a comprehensive workshop manual) Manual Type Type: Complete Workshop Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Powertrain: Engine (1.6L B6ZE), transmission (manual and automatic), clutch, drivetrain components. Chassis And Suspension: Front and rear suspension, steering system, wheels, tires, brakes (front disc, rear disc). Electrical System: Complete wiring diagrams, ignition system, charging system, starting system, lighting, instrumentation, accessories. Body And Interior: Body panels, doors, windows, convertible top mechanism, seats, dashboard, climate control. Procedures Included Maintenance: Oil changes, filter replacements, fluid checks and changes, spark plug replacement, timing belt inspection/replacement. Repair: Engine overhaul, transmission rebuild, brake caliper replacement, suspension component repair, electrical diagnostics and repair. Troubleshooting: Detailed diagnostic procedures for common and uncommon issues, fault code interpretation (where applicable). Specifications And Data: Torque specifications, clearances, fluid capacities, electrical resistance values, diagnostic specifications. Technical Depth Depth: Professional-level detail suitable for experienced mechanics and DIY enthusiasts aiming for thorough repairs. Diagnostic Capability: Includes advanced diagnostic trees and troubleshooting flowcharts. Rebuild Procedures: Comprehensive instructions for engine and transmission disassembly, inspection, and reassembly. 📊 Manual Specifications File Format Format: PDF Searchability: Fully searchable text content for quick information retrieval. Print Quality: High-resolution, suitable for printing individual pages or sections. Device Compatibility: Compatible with PC, Mac, Tablets, and Smartphones. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Inline 4-cylinder, DOHC, 16-valve Displacement: 1597 cc (1.6 Liters) Bore X Stroke: 78.0 mm x 83.6 mm Compression Ratio: 9.4:1 Performance Horsepower 1991: 116 hp @ 6500 rpm Torque 1991: 100 lb-ft @ 5000 rpm Horsepower 1992: 116 hp @ 6500 rpm Torque 1992: 100 lb-ft @ 5000 rpm Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (87 octane recommended) Fuel Pump Pressure: 42-50 psi (specified in manual) 🔧 Transmission Standard Transmission Type: 5-speed Manual Optional Transmission Type: 4-speed Automatic (optional on some models) Features Clutch Type: Hydraulically actuated, dry single plate Manual Transmission Fluid Spec: GL-1 or GL-4 Gear Oil (e.g., SAE 75W-90) Automatic Transmission Fluid Spec: Dexron II or equivalent (specified in manual) 📐 Dimensions Exterior Length: 3955 mm (155.7 in) Width: 1675 mm (66.0 in) Height: 1235 mm (48.6 in) Wheelbase: 2265 mm (89.2 in) Front Track: 1420 mm (55.9 in) Rear Track: 1430 mm (56.3 in) Ground Clearance: 135 mm (5.3 in) Weights Curb Weight Manual: Approx. 955-980 kg (2105-2160 lbs) Curb Weight Automatic: Approx. 990-1010 kg (2180-2225 lbs) Cargo Trunk Volume: Approx. 150 liters (5.3 cu ft) 🛡️ Safety Features Ratings NHTSA Driver Front Impact 1991: 4 Stars (NHTSA rating for similar vehicles of the era) NHTSA Passenger Front Impact 1991: 4 Stars (NHTSA rating for similar vehicles of the era) Active Features ABS: Optional Anti-lock Braking System (ABS) on rear wheels. Passive Features Airbags: Driver-side airbag standard for 1990 onwards. Rollover Protection: Reinforced windshield frame and optional pop-up roll bar. Seatbelts: Three-point seatbelts 💡 Technology Features Infotainment Audio System: Factory fitted AM/FM stereo with cassette player; often upgraded by owners. Speakers: Typically 4 speakers (door and dashboard mounted). Driver Assistance Cruise Control: Optional on some models. Connectivity Phone Integration: Not applicable for this era. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles or 6 months, whichever comes first. Air Filter Replacement Interval: Every 15,000 miles or 12 months. Spark Plug Replacement Interval: Every 30,000 miles. Timing Belt Replacement Interval: Every 60,000 miles or 5 years (critical for engine longevity). Fluid Specifications Engine Oil Capacity: 3.5 US quarts (3.3 liters) with filter change (API SG/SH rated oil, 10W-30 recommended). Coolant Capacity: Approx. 5.5 US quarts (5.2 liters) (50/50 ethylene glycol coolant). Brake Fluid Spec: DOT 3 (or higher) brake fluid. Power Steering Fluid Spec: Dexron II or equivalent (if equipped with power steering). Known Issues Common Wear Items: Clutch wear, rear main seal leaks, oil pan gasket leaks, shifter bushings, radiator. Rust Prone Areas: Rocker panels, rear fender lips, floor pans, sills (especially in corrosive climates). Electrical Quirks: Sun-faded paint, window motor issues, convertible top hydraulic...