![]() ![]() With either type, the engine will stop immediately if the belt or chain breaks, leaving you stranded. With an interference engine, the pistons will hit and usually bend some of the valves if the timing belt or chain breaks, causing major internal engine damage that can be expensive to repair in a noninterference engine, no internal damage should occur. ![]() One element that factors in here is whether your car has an interference (or non-freewheeling) engine or noninterference (or freewheeling) engine. (Both setups look somewhat like a bicycle’s chain and sprockets.) If the timing belt or timing chain fails, the engine stops running immediately, potentially resulting in expensive internal engine damage. ![]() What typically connects the crankshaft to the camshaft is either a cogged timing belt riding on pulleys or a timing chain riding on sprockets. On a conventional piston engine - which is found in virtually all modern passenger cars - the up-and-down motion of the pistons turn the crankshaft, and the crankshaft turns the camshaft, which opens the valves at the proper time. Related: Is Your Check-Engine Light On? 5 of the Most Common Causes What Does the Timing Belt or Timing Chain Do? But why should you replace your vehicle’s timing belt or chain, and how do you find out which one your car has? Generally speaking, timing belts have the advantage of being quieter and cheaper to produce and replace, while timing chains typically have a longer lifespan. Many modern passenger cars have either a timing belt or a timing chain. ![]()
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