How Long Can You Drive with a Scored Engine?
2 Answers
Engine scoring means you should not continue driving; instead, park the vehicle and wait for rescue and repair to avoid further damage. Below is an introduction to engine scoring: Introduction: Engine scoring refers to the 'welding' and damage of the piston, piston rings, and cylinder liner surfaces due to high temperatures. Definition: It occurs when the oil film between the piston and cylinder liner is interrupted, leading to dry friction. The intense frictional heat causes microscopic melting and adhesion of the metal, tearing nearby metal particles. Cause: The root cause of engine scoring is the interruption of the oil film. To meet gas sealing requirements, the gap between the piston rings and cylinder liner should be as small as possible, which creates unfavorable lubrication conditions. The friction between the cylinder liner and piston rings depends on factors such as piston ring tension, operating temperature, sliding speed, oil film distribution, component quality, and break-in conditions.
I'm in the automotive repair business, and cylinder scuffing is something you really can't ignore. When the pistons and cylinder walls are rubbing and deforming, continuing to drive risks sudden seizure and engine stall—especially dangerous at high speeds when you could lose power abruptly. Last week, a customer insisted on driving another two kilometers, and the engine ended up completely ruined, costing over 8,000 more in repairs. My advice? If you notice cylinder scuffing symptoms, pull over immediately and call for roadside assistance—every extra minute driven is gambling with your safety. Get it inspected right away to determine whether piston rings need replacement or a full engine overhaul is required—don't take chances. Oh, and always monitor your oil levels; low oil is the most common cause of cylinder scuffing.
