1990 Mazda MX-5 Miata (NA) OEM Service & Repair Manual

1990 Mazda MX-5 Miata (NA) OEM Service & Repair Manual

Engine covered:

• 1.6L B6 DOHC I4
• 1.8L BP DOHC I4

The 1990 Mazda MX-5 Miata (NA) OEM Service & Repair Manual is the original factory workshop manual used by Mazda technicians during the first generation Miata’s early production years. This manual is written for hands-on mechanical and diagnostic work, laying out proper repair procedures in a clear, methodical way.

It’s a solid reference whether you’re a professional tech who’s worked on these cars for years or a dedicated DIY owner keeping an NA Miata in proper shape. The tone is practical and straightforward—more like a senior mechanic walking you through the job than a simplified guide.

What’s Inside the 1990 MX-5 Miata OEM Service Manual

General Information & Vehicle Specifications

Vehicle identification details, system descriptions, service precautions, specifications, and baseline technical data used throughout the manual.

Pre-Delivery Inspection & Scheduled Maintenance

Factory maintenance schedules, inspection procedures, tune-up operations, and routine service intervals designed to keep the NA Miata running as intended.

Engine Service & Repair

Complete engine coverage including removal, disassembly, inspection, reassembly, and diagnostic procedures for the B6 and BP engines.

Lubrication System

Oil pump service, lubrication flow checks, oil filter replacement, and troubleshooting procedures for lubrication-related issues.

Cooling System

Radiator service, thermostat inspection, water pump replacement, coolant flow testing, and overheating diagnostics.

Fuel & Emissions Control Systems

Fuel delivery system operation, evaporative emission components, testing methods, adjustments, and emissions-related diagnostics.

Engine Electrical Systems

Ignition system components, charging and starting systems, sensor diagnostics, and engine-related electrical troubleshooting.

Clutch System

Clutch removal and installation procedures, inspection steps, hydraulic system service, and adjustment guidelines.

Manual Transmission

Gearbox service and overhaul procedures, shift mechanism servicing, gear and bearing inspection, and fault diagnosis.

Propeller Shaft & Driveline

Driveshaft removal and installation, balance checks, U-joint inspection, and driveline service procedures.

Front & Rear Axles

Differential service, axle shaft inspection, lubrication specifications, and related maintenance procedures.

Steering System

Manual and power steering components, adjustment procedures, and troubleshooting for steering-related concerns.

Braking System

Hydraulic brake service, disc brake component replacement, parking brake adjustment, and brake system diagnostics.

Suspension System

Front and rear suspension coverage including control arms, bushings, shocks, struts, and service guidelines.

Wheels & Tires

Wheel alignment specifications, tire wear diagnosis, wheel service procedures, and maintenance checks.

Body & Exterior Components

Exterior body panels, trim, alignment checks, and body repair procedures.

Interior & Body Electrical Systems

Lighting systems, switches, interior electrical components, and electrical diagnostics related to body systems.

Heater & Air Conditioning

HVAC component service, heater core procedures, air conditioning system checks, and troubleshooting steps.

Technical Data & Specifications

Torque values, fluid capacities, system measurements, tolerances, and reference charts used during service and repair.

Special Tools & Reference Index

Factory-specified Mazda service tools and a detailed parts index for accurate component identification.

Who This Manual Is For

This OEM service and repair manual is ideal for workshops, restoration projects, track-day preparation, and serious DIY owners working on early NA Miatas. It’s especially valuable for engine work, drivetrain servicing, suspension refreshes, and long-term maintenance planning.

Format & Compatibility

Provided as a searchable digital PDF, suitable for use on desktops, laptops, tablets, or mobile devices in the garage or workshop.

Download the 1990 Mazda MX-5 Miata (NA) OEM Service & Repair Manual

If you’re maintaining, restoring, or repairing a first-generation Miata, this manual gives you the same procedures and specifications Mazda technicians relied on when these cars were new.

Language: English
Compatibility: Windows, macOS, Linux, iOS, Android
Requirements: PDF Reader (e.g., Adobe Reader)