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One of the most significant risks associated with a faulty timing belt is the potential for catastrophic engine damage. If a timing belt fails while the engine is running, it can lead to severe internal damage. In interference engines, where the paths of the pistons and valves overlap, a broken timing belt can cause the pistons to collide with the open valves, resulting in bent valves, damaged pistons, and a complete engine overhaul. This can lead to repairs that cost thousands of dollars, making preventive maintenance a critical step for any machine operator.


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2. Labor Costs Replacing an engine belt isn't always a straightforward task. The labor involved in changing a serpentine belt can take anywhere from one to two hours, depending on engine design and accessibility. Consequently, labor costs can add an additional $75 to $150 to the final bill. Timing belts, due to their complexity and the tight space in many engine bays, can take significantly longer to replace—often resulting in labor costs that can exceed $300.


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