During a routine inspection, which would indicate proper seating of the valves?

Uniform compression readings during a routine inspection indicate proper seating of the valves. In a well-functioning engine, each cylinder should maintain similar compression levels, reflecting that the intake and exhaust valves are sealing correctly. If the valves are seated properly, they will allow for optimal compression during the compression stroke of the engine cycle, which is critical for performance and efficiency.

High oil pressure, low fuel consumption, and clean engine surfaces, while important indicators of engine health and operation, do not specifically correlate with valve seating. High oil pressure may relate more to oil viscosity or pump efficiency, low fuel consumption could indicate overall engine efficiency but does not pinpoint valve performance, and clean engine surfaces suggest good maintenance practices but do not provide direct evidence of valve seating integrity. Thus, uniform compression readings are the most definitive indicator of properly seated valves in an engine.