Do bad piston rings cause blow-by?
Do bad piston rings cause blow-by? Worn piston rings The piston rings are continuously being pushed back and forth in the cylinder wall, and with time they become worn and destroyed. This leads to leakage of gases, which causes blow-by. Will new piston rings fix blow-by? Over time, they become damaged, and eventually, destroyed. This destruction leads to the gases leaking, which causes the blow-by to build up. The fix for the smashed rings is to replace them with new rings. In a diesel engine, smashed or damaged piston rings can lead to blow-by on an engine. When do you...