Book excerpt: Watson makes the Ford fuel injection system easy to understand, and shows you how to get the most out of your EEC IVs helpful self-diagnostic system. Your guide to understanding, troubleshooting, repairing, tuning, and modifying fuel-injected Ford engines. Detailed text and 250 illustrations provide step-by-step information for testing and tuning engines for peak performance and efficiency. This updated edition contains information on the new On-Board Diagnostics II system. 2nd ed.