Engine Inspection
Most professional mechanics agree that the best way to begin any vehicle diagnostic is to complete a detailed inspection. Whether this involves a physical inspection of the engine, a test drive, or scanning for OBD-II trouble codes, the process involved in a diagnostic engine inspection is detailed, and typically meant to find the source of a specific symptom, such as an engine is bucking or knocking situation. However, a general engine inspection is much more broad, and meant to examine the overall condition of an engine, whether or not it's currently exhibiting symptoms. A goal of a general engine inspection to check critical components for wear and tear so the technician knows which items require replacement during a tune-up.