What should an inspector look for in a compression check for worn piston rings?

During a compression check, an inspector specifically assesses the pressure generated within the cylinders of an engine when the piston is at compression stroke. Worn piston rings can lead to a loss of effective sealing within the cylinder, resulting in lower than normal pressure readings. Therefore, low compression is a direct indication of potential issues with the piston rings, as they may not be able to maintain the necessary pressure due to wear and tear.

Low compression indicates that the engine may not be functioning efficiently, which can lead to performance issues. Monitoring compression is essential for diagnosing the health of the engine and determining the need for maintenance or repairs.

While fuel leaks, audible knocking, and high temperature can signify various issues in the engine, they do not directly correlate to the specific problem of worn piston rings and their effect on compression pressure.