What are the consequences of a broken engine belt?

1 Answers
DanielAnn
07/28/25 6:36pm
Engine belt breakage can cause the engine valves and ignition system to malfunction. Here are the relevant details: 1. Effects of belt breakage: The pistons will continue moving up and down due to inertia while the opening and closing of valves stops. In the confined combustion chamber, the pistons may collide with the valves, bending the valve pushrods, denting the piston crowns, or even punching holes in the cylinder head. This would require either major engine overhaul or complete engine replacement. 2. Prevention: Engine belt failure poses serious risks. Depending on engine design, timing belts should generally be replaced after the vehicle has traveled 60,000 to 100,000 kilometers.
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