Piston Rings Problems Engine Of A Car Is Loosing Compression. Is It Possible To Rectify The Problem With New Piston Rings Only?

Engine of a car is loosing compression. Is it possible to rectify the problem with new piston rings only? - piston rings problems

The spark plug of my 1998 zen often polluted. Mechanic said the engine lost compression.They recommends complete overhaul of the engine. It is said that is when I change my mind with rings large ring, they succeed. Why is this so?