🏷️ Basic Information

Make:

Mazda

Model:

Miata

Years Covered:

1991, 1992, 1993

👋 Introduction

Segment:

Lightweight, affordable two-seater sports car, autocross champion, and enthusiast favorite.

Target Audience:

Enthusiast owners, DIY mechanics, professional repair shops specializing in Mazda vehicles.

Competitors Era:

Lotus Elan, Triumph TR7, MG Midget, Alfa Romeo Spider.

Unique Selling Proposition:

Exceptional handling and driver feedback, reliability, and accessibility compared to many European contemporaries.

Driving Dynamics:

Near perfect 50/50 weight distribution, rear-wheel drive, precise steering, and supple suspension.

Design:

Classic British roadster styling, pop-up headlights, simple and functional interior.

Simplicity:

Mechanically straightforward, making it accessible for home mechanics.

📋 Manual Details

Primary Coverage:

Comprehensive factory service and repair procedures for 1991-1993 Mazda Miata (NA chassis)

Diagnostic Coverage:

Diagnostic procedures, fault codes, and troubleshooting guides for all major systems

Electrical Coverage:

Detailed wiring diagrams, electrical component locations, and testing procedures

Engine Coverage:

Engine mechanical, lubrication, cooling, fuel, ignition, and emission control systems

Transmission Coverage:

Manual transmission (and potentially automatic transmission if applicable to the model year) service, repair, and specifications

Suspension Coverage:

Front and rear suspension, steering system, and wheel alignment procedures

Brake Coverage:

Brake system service, repair, bleeding, and specifications (including ABS if equipped)

Body Coverage:

Body panel removal/installation, interior trim, convertible top mechanism, and exterior components

HVAC Coverage:

Heating, Ventilation, and Air Conditioning (HVAC) system service and repair

Estimated Page Count:

Approximately 1000-1500 pages (typical for a comprehensive factory service manual)

Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

Downloadable digital format (likely PDF)

📖 Manual Coverage

Engine Systems:

1.6L DOHC 4-cylinder (B6ZE engine): Engine mechanical, cylinder head, pistons, crankshaft, camshafts, timing belt, lubrication system (oil pump, oil filter, oil pressure), cooling system (radiator, water pump, thermostat, fan), fuel injection system (ECU, sensors, injectors, fuel pump, fuel filter, fuel pressure regulator), ignition system (ECU, ignition coils, spark plugs, distributors), emission control systems (EGR, catalytic converter, evaporative emission control).

Transmission Systems:

MX-5 Manual Transmission (6-speed optional for later years, but likely 5-speed for '91-'93 models). Includes clutch system, transmission assembly, gear shift mechanism, and driveline components (driveshaft, differential).

Braking Systems:

Front and rear disc brakes, hydraulic system, brake booster, master cylinder, brake calipers, brake pads, brake rotors, parking brake system. ABS (Anti-lock Braking System) troubleshooting and repair if equipped.

Steering Systems:

Rack and pinion steering, steering column, power steering system (if equipped), steering linkage.

Suspension Systems:

Front independent suspension (double wishbone), rear independent suspension (multi-link), springs, shock absorbers, control arms, sway bars, bushings, wheel bearings, wheel alignment specifications.

Electrical Systems:

Battery, charging system (alternator), starting system (starter motor), lighting system (headlights, taillights, interior lights), instrument panel, gauges, wipers and washers, horn, power windows, power mirrors, central locking, convertible top motor (if power top), audio system, HVAC controls, fuse box diagrams, relay locations, comprehensive wiring schematics.

Body And Trim:

Exterior body panels, doors, hood, trunk, bumpers, mirrors, windshield, side glass, convertible top frame and fabric, interior trim panels, seats, dashboard, center console, floor mats.

HVAC Systems:

Air conditioning system (compressor, condenser, evaporator, refrigerant, expansion valve), heating system (heater core, blower motor, control assembly), ventilation system.

Maintenance Procedures:

Routine maintenance checks, oil changes, filter replacements, spark plug replacement, fluid level checks and top-offs, belt inspection and tensioning, brake pad inspection, tire rotation.

Repair Procedures:

Step-by-step instructions for engine component removal and installation (e.g., head gasket, oil pan, intake manifold, exhaust manifold), transmission overhaul, clutch replacement, brake caliper rebuild, suspension component replacement, electrical component troubleshooting and replacement, convertible top repair.

Diagnostic Procedures:

Troubleshooting guides based on symptoms, diagnostic trouble codes (DTCs), sensor testing, electrical circuit testing using multimeters and oscilloscopes.

Specifications And Torques:

Detailed torque specifications for all critical fasteners, engine component clearances, fluid capacities, refrigerant capacities, resistance values, voltage specifications.

Wiring Diagrams:

Complete and detailed wiring schematics for all vehicle electrical systems, including power distribution, grounds, and component connections.

Troubleshooting Charts:

Flowcharts and tables to systematically diagnose common faults and their potential causes.

Special Tools:

Identification and usage of special tools required for specific repair and maintenance procedures.

Depth Of Coverage:

In-depth, from basic maintenance to complete engine and transmission overhauls. Covers detailed component disassembly, inspection, measurement, and reassembly.

Diagnostic Level:

Advanced diagnostics including electrical circuit tracing, sensor data interpretation, and ECU behavior analysis.

Rebuild Instructions:

Comprehensive instructions for rebuilding key components such as the engine, transmission, brake calipers, and steering rack.

📊 Manual Specifications

Format:

Digital (likely PDF)

Searchability:

Likely text-searchable for quick information retrieval.

Quality:

Designed for clear reproduction, with legible diagrams and text.

Type:

N/A (Digital Download)

Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code:

B6ZE

Engine Type:

Naturally Aspirated Inline-4 (DOHC)

Displacement:

1.6 Liters (1597 cc)

Bore X Stroke:

78.0 mm x 83.6 mm

Compression Ratio:

9.4:1

Valvetrain:

DOHC, 16 Valves (4 valves per cylinder)

Horsepower:

116 hp @ 6500 RPM (US Spec)

Torque:

100 lb-ft @ 5000 RPM (US Spec)

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded gasoline (87 octane recommended)

Fuel Tank Capacity:

11.7 US gallons (44.3 Liters)

🔧 Transmission

Type:

5-Speed Manual Transmission

Type:

4-Speed Automatic Transmission (less common, but available on some models)

Clutch Type:

Hydraulically operated, single dry plate

Differential:

Open differential

📐 Dimensions

Length:

155.3 inches (3945 mm)

Width:

66.1 inches (1680 mm)

Height:

48.8 inches (1240 mm) (with soft top up)

Wheelbase:

89.2 inches (2265 mm)

Ground Clearance:

5.1 inches (130 mm)

Curb Weight:

Approx. 2300-2400 lbs (1043-1089 kg)

Weight Distribution:

Near 50/50 front/rear

🛡️ Safety Features

NHTSA Driver Side Impact:

4-star (for models without airbags, as airbags were optional/late availability)

NHTSA Passenger Side Impact:

4-star (for models without airbags)

ABS:

Optional ABS (Anti-lock Braking System) available on some trims/model years.

Airbags:

Driver-side airbag became standard later in the NA generation, but was optional on early models (1990-1993).

Rollover Protection:

Reinforced A-pillars and an optional (often dealer-installed) roll bar or hoop.

💡 Technology Features

Audio System:

Factory AM/FM stereo with cassette player. Optional CD player on later models. Speaker placement typically in door panels and dashboard.

ABS Availability:

Optional ABS was available.

Connectivity Features:

Basic. Primarily focused on the driving experience rather than extensive electronic connectivity.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first.

Oil Filter Interval:

Replace with oil change.

Air Filter Interval:

Inspect every 7,500 miles (12,000 km), replace as needed (typically every 15,000-30,000 miles).

Spark Plug Interval:

Replace every 30,000 miles (48,000 km).

Timing Belt Interval:

Crucial: Replace every 60,000 miles (96,000 km) or 5 years. Failure can cause catastrophic engine damage.

Coolant Flush Interval:

Every 2 years or 30,000 miles (48,000 km).

Engine Oil Type:

API SG or SH, SAE 5W-30 or 10W-30.

Engine Oil Capacity:

4.0 US quarts (3.8 Liters) with filter change.

Coolant Type:

Ethylene glycol-based antifreeze, pre-mixed with distilled water (50/50).

Coolant Capacity:

Approx. 4.2 US quarts (4.0 Liters).

Brake Fluid Type:

DOT 3.

Transmission Fluid Type Manual:

API GL-4, SAE 75W-90 Gear Oil.

Transmission Fluid Capacity Manual:

Approx. 2.0 US quarts (1.9 Liters).

Rust:

Common on rocker panels, wheel arches, and sills due to age and road salt exposure.

Oil Leaks:

Valve cover gasket, rear main seal, and oil pan gasket are prone to seeping.

Cooling System:

Radiator can degrade over time, leading to leaks. Heater core issues can also occur.

Convertible Top:

The fabric can degrade, and the frame mechanism can become stiff or break.

Window Regulators:

Can become stiff or fail, making it difficult to raise/lower the windows.

Fuel Pump:

Can become weak or fail with age, leading to starting issues or poor performance.

📚 Vehicle History

Brand Focus:

Mazda's commitment to lightweight, driver-focused vehicles, building on success with models like the Cosmo and RX series.

Generation Name:

First Generation (NA)

Introduction Year:

1989 (as a 1990 model year vehicle)

Key Changes 1991 1993:

Minor cosmetic updates, potential power increases, introduction of options like ABS and airbags. Specific engine power output varied slightly by market.

Manufacturing Location:

Hofu, Yamaguchi Prefecture, Japan

Total Na Production:

Over 400,000 units worldwide across its lifecycle (1989-1997).

🏆 Awards & Recognition

Car And Driver 10Best:

Named to Car and Driver's '10Best' list multiple times during its production run.

Automotive Journalism Acclaim:

Universally praised by automotive journalists for its driving dynamics and value proposition.