![]() In many cases, the problem is so severe and costly that the owner decides to send the car to the junkyard. This could potentially ruin the engine.Įngine replacement is expensive, up to $6000. If the timing chain breaks while driving, the pistons will be damaged from contact with the valves. When you have your oil changed, ask your mechanic if any small pieces of metal were found.Ī broken timing chain will cause an engine to not start. If the timing chain breaks, loose metal rolls around inside the motor which can lead to serious damage. ![]() If the timing chain is worn, small pieces of metal can break off and enter the oil pan. ![]() Additionally, the engine may run poorly and lack accelerating power. This causes the engine’s timing to fail and often results in a misfire. Normal wear and tear causes the timing chain to stretch meaning the chain to skip a gear on the camshaft or crankshaft. Signs of a bad or failing timing chain include: What Are the Symptoms of a Bad Timing Chain? If you drive an older vehicle, or one close to 100,000 miles, you should have it replaced or at least become aware of the symptoms of a failing timing chain. Unless there is a specific problem, the timing chain normally needs to be replaced between 80,000 and 120,000 miles. Using the wrong oil can cause extra weight on the chain, meaning the engine will not be properly lubricated. Most modern vehicles only use synthetic oil. If the chain fails, the vehicle will not run at all.įailure can also depend on oil quality. The guides connected to the timing chain can wear out, causing the timing chain to fail. Timing Chains stretch due to normal wear and tear. What Causes a Timing Chain to Break or Wear? If the pistons and valves don’t fire or move when they should, your engine will suffer severe damage and not work. The timing chain controls the pistons and valves, making sure they operate when they need to inside the engine’s cylinders. Every time you use the engine, the timing chain is used too. The timing chain is located inside the engine. This allows the engine’s valves to open and close when each cylinder is fired. Prices for timing chain replacement may vary anywhere from $370 to $1,500 depending on the vehicle model.What Is the Timing Chain and What Does it Do?Ī timing chain coordinates the rotation of the crankshaft and camshaft. Many cars have two or even three chains in their motors and often your auto repair shop may recommend replacing all the chains at once. If the timing chain is worn, it's usually replaced as a kit with a new tensioner, guides, and other parts of the chain drive mechanism. The timing chain noises can range from rattling to whirring, whining or buzzing. A worn timing chain, chain guides or chain tensioner can also cause a variety of noises originating from the timing chain cover area of the engine. This is because as the chain wears out, it stretches and the ignition and valve timing becomes more retarded. The Check Engine light might come on too. Often, if the timing chain is worn, the engine may feel a bit sluggish, low on power or have trouble starting. How do you know if the timing chain is worn? See timing chain animation.Ĭhain guides and silencers are used to keep the timing chain from vibrating. Timing chain, tensioner and chain guides. For example, we often see timing chain failures in older Ford trucks, Chevy Ecotec engines and in older Honda and Nissan vehicles. In some cars, the timing chain can last for the lifetime of the vehicle, but in others it is know to wear out sooner. Lack of oil changes, low oil level or poor oil quality can cause the timing chain to wear faster. A timing chain is lubricated by the engine oil. Like any other moving mechanical component inside any engine, a timing chain wears out and stretches. Timing chain problems are not uncommon, especially in high-mileage vehicles. Does it mean that the timing chain immune to mechanical failures? ![]() A timing chain doesn't need to be replaced unless there is a problem with it. A timing chain runs inside the engine, as it needs to be lubricated by the engine oil.Ī timing belt typically needs to be replaced between 60,000 and 100,000 miles depending on the vehicle. A timing belt is a toothed belt made of high-quality rubber it runs outside of the engine, covered by a protective cover.Ī timing chain is made of metal, similar to a bicycle chain.
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