This comprehensive 1978 Mazda RX-3 Service and Repair Manual provides detailed instructions and specifications for servicing and repairing all models of the 1978 Mazda RX-3. It is the same manual used by Mazda technicians at dealerships, ensuring accurate and reliable information for all your repair needs. The manual covers a wide range of topics, including: * **Maintenance:** Regular maintenance schedules, fluid checks, and adjustments. * **Engine:** Detailed coverage of the rotary engine, including troubleshooting, rebuilding, and performance tuning. * **Control System:** Information on the fuel injection system, ignition system, and other electronic controls. * **Mechanical Components:** Step-by-step instructions for repairing and replacing components like the transmission, suspension, brakes, steering, and more. * **Electrical System:** Comprehensive diagrams and instructions for diagnosing and repairing electrical issues, including wiring schematics and component descriptions. * **Body & Interior:** Information on repairing and replacing body panels, interior components, and accessories. With its clear illustrations, diagrams, and detailed instructions, this manual will empower you to confidently tackle any repair or maintenance task on your 1978 Mazda RX-3.

The 1978 Mazda RX-3, a compact car produced by the Japanese automaker Mazda, stands as a testament to the company's early foray into rotary engine technology. The RX-3, launched in 1972, was the first mass-produced car to feature Mazda's innovative Wankel engine. This revolutionary powerplant, with its unique design and operation, offered a lighter and more compact alternative to traditional piston engines. The 1978 model year, a significant point in the RX-3's lifespan, saw the car receive various refinements, including updated styling, a larger engine, and improved safety features. The RX-3's design, characterized by sharp lines and a sporty profile, was ahead of its time, offering a blend of practicality and appeal. The 1978 RX-3's heart was a 1.3-liter 12A rotary engine, known for its smooth, high-revving nature. It delivered a modest 88 horsepower but impressed with its quick acceleration and responsive handling. The car was available in a range of body styles, including a two-door coupe, a four-door sedan, and a three-door wagon. The RX-3's interior, though simple, offered decent comfort, with room for four passengers. The 1978 model year saw the introduction of important safety features like padded dashboards and collapsible steering columns, highlighting Mazda's commitment to occupant protection. Despite its small size, the RX-3 was praised for its fuel efficiency, a crucial factor during the 1970s energy crisis. However, the RX-3 was not without its drawbacks. The rotary engine's tendency to consume oil and its relatively short lifespan posed challenges for some owners. Despite these limitations, the 1978 Mazda RX-3 remained a popular choice for drivers seeking a stylish, sporty, and fuel-efficient car, solidifying its place in automotive history.