This manual covers the Porsche 911, specifically the G-Series (Pre-impact bumper update) produced from 1974 to 1989, with a focus on the 1978 model year and its associated chassis code 930. As an iconic rear-engine, rear-wheel-drive sports car, the 911 is renowned for its engineering excellence and distinctive design. This generation evolved the classic 911 silhouette, incorporating updated safety and comfort features. The 1978 model features a naturally aspirated flat-six boxer engine with a displacement of 2994cc, air-cooling, and Bosch K-Jetronic fuel injection, delivering 180 PS. Its robust construction and performance-oriented design have cemented its status among enthusiast owners and specialists.

This comprehensive workshop service repair manual provides complete factory service and repair information in English. It details all essential maintenance procedures, including scheduled servicing, oil changes, and tune-ups, alongside in-depth repair instructions for all major systems. Coverage extends to engine overhaul, transmission repairs, chassis and suspension work, brake system servicing, and electrical system diagnostics. The manual also includes troubleshooting guides and detailed diagnostic steps for common and uncommon faults, ensuring owners, mechanics, and technicians can effectively maintain and repair their Porsche 911.