This comprehensive repair and service manual covers all aspects of the Renault 18, R18, and Fuego Mk I and II models produced between 1978 and 1993. It is designed to provide detailed instructions and technical information for both professional mechanics and DIY enthusiasts. The manual is structured to guide users through every stage of maintenance and repair, from routine servicing to complex component overhauls. Within its pages, you will find detailed information and step-by-step instructions covering a wide range of topics, including: * **Routine Maintenance:** Learn how to perform essential maintenance tasks like oil changes, filter replacements, and fluid checks, ensuring your vehicle operates smoothly and reliably. * **Tune-Up:** Master the procedures for optimizing engine performance through tune-up procedures, including spark plug replacement, ignition timing adjustments, and carburetor or fuel injection system maintenance. * **Engine:** Explore the intricacies of both OHV and OHC engines, gaining insights into their operation, troubleshooting common issues, and performing necessary repairs. * **Engine Electrics:** Understand the electrical systems associated with the engine, covering components like starter motors, alternators, sensors, and wiring diagrams to assist with diagnosis and repair. * **Cooling System:** Learn about the cooling system's function, including the radiator, thermostat, water pump, and hoses, and how to maintain and repair them. * **Fuel System:** Gain a thorough understanding of the fuel system, encompassing the fuel tank, fuel lines, fuel pump, carburetor or fuel injection system, and emission control systems, enabling you to troubleshoot and resolve fuel-related issues. * **Clutch and Gearbox:** Acquire knowledge about the clutch and gearbox systems, including their operation, adjustment procedures, and troubleshooting common problems. * **Automatic Transmission:** Explore the intricacies of automatic transmission systems, covering maintenance, repair procedures, and fault diagnosis. * **Steering:** Dive into the steering system, encompassing the steering wheel, steering column, power steering system, and associated components, and learn how to maintain and service them. * **Suspension:** Gain a thorough understanding of both front and rear suspension systems, covering their operation, maintenance requirements, and repair procedures. * **Brakes:** Master the complexities of the braking system, including disc brakes, drum brakes, brake lines, brake fluid, and ABS systems, enabling you to diagnose and address braking issues. * **General Electrics:** Explore the vehicle's overall electrical system, covering components like the battery, wiring harness, fuse box, and electrical accessories, providing guidance on troubleshooting and repair. * **Body and Fittings:** Learn about the vehicle's bodywork, interior components, and exterior fittings, addressing common repairs and maintenance needs. * **Accessories:** Discover how to maintain and repair various vehicle accessories, including air conditioning, heating, and other comfort features. * **Technical Data:** Benefit from detailed technical specifications, including engine dimensions, fluid capacities, torque settings, and wiring diagrams, providing valuable information for repair and maintenance. * **Index:** Quickly and easily find the information you need with a comprehensive index that provides a clear listing of all topics covered within the manual. This comprehensive manual empowers you to confidently diagnose, maintain, and repair your Renault 18, R18, or Fuego Mk I and II, ensuring your vehicle remains in top condition.

The Renault 18, marketed as the R18 in certain markets, was a compact car produced by French automaker Renault from 1978 to 1986. It represented a significant step forward for Renault, employing a front-wheel drive layout, a sophisticated suspension, and modern styling that broke away from the more traditional designs of the time. The R18 was available in various body styles, including a 3-door hatchback, 5-door hatchback, and a 4-door sedan. It was powered by a range of petrol engines, ranging in size from 1.4 liters to 1.7 liters. The Renault Fuego, marketed in some markets as the R18 Turbo, was a sporty coupe derivative of the R18 platform, introduced in 1980. Sharing the R18's underpinnings and drivetrain, the Fuego was distinguished by its sleek, fastback design. It boasted a low drag coefficient, contributing to its sporty appeal. The Fuego offered a choice of petrol engines, with the top-of-the-line version being the turbocharged 1.6-liter, which made it one of the most powerful production cars of its era. Despite its sporty aspirations, the Fuego was also known for its practicality, offering a surprisingly spacious interior and a reasonably sized trunk. The Fuego underwent a facelift in 1984, which included revised front and rear end styling, as well as interior updates. Production of the Fuego ceased in 1986, ending the R18 lineage. The Renault 18 and Fuego were ultimately replaced by the Renault 19, ushering in a new era for the French automaker.