
Engine Diagnostics: A Complete Guide for Clackamas, Happy Valley, and the Greater Portland Metro Modern engines are more advanced than at any point in automotive history. What once relied on mechanical linkages, simple carburetors, and basic ignition systems is now controlled by a complex, computer-managed network of sensors, actuators, modules, and real-time data. Every second your engine runs, hundreds of processes must operate in harmony—fuel delivery, timing, airflow, combustion, temperature regulation, emissions, electrical communication, and more. Because of this complexity, engine diagnostics have become essential. When something goes wrong, the vehicle communicates through symptoms, warning lights, and behavior changes. But those symptoms must be interpreted correctly. That is the job of a complete diagnostic evaluation. Most drivers misunderstand what diagnostics actually mean. They associate diagnostics with a quick code scan. But a code is not a diagnosis. A code do ... read more