If a chain guide wears out far enough, it can break, and the debris can cause further damage inside your engine. This could cause your camshaft timing to go wrong, resulting in a check engine light. Either one of these allows the chain to come loose, which causes a metallic clanking sound inside the engine. Over time, chain guides can wear out, and tensioner springs can get weak. What Happens If You Don’t Replace the Timing Chain? Read our complete cost guide here to learn how much it could cost to replace your camshaft sensor. The sprockets on the crankshaft and camshafts also get replaced, since they wear along with the chain. The chain itself does wear, so all of these parts get replaced during this job. Unlike a timing belt, it’s normally not the chain itself that wears out first, but the tensioners and guides that keep it in its proper position. What Does Replacing a Timing Chain Include? Overall, replacing the timing chain and its associated hardware should take a qualified mechanic 5 to 8 hours to complete. Camshafts open and close the intake and exhaust valves at precisely the correct time during the combustion process inside the cylinders. The timing chain inside your engine connects the crankshaft to your camshafts. The FIXD Sensor and free app translates car problems into simple terms on your phone, tracks car maintenance, gives repair estimates, and more. Click here to get FIXD for only $19.99, including a free 14-day trial of FIXD Premium! Try FIXD for $19.99 FIXD Mechanic Hotline is available at no cost with a FIXD Premium membership. If you get stuck, you can always reach out to our Mechanic Hotline for help. A mistake here could destroy your engine, so be sure to get it right the first time. Be extremely careful to set the timing correctly when you install the new chain. This will include not only the chain, but also any tensioners, guides, pulleys, and other parts that need to be replaced at the same time. If you do decide to tackle this job yourself, invest in a complete timing chain kit for your particular engine. The additional cost of their labor is still less than the cost of a new or rebuilt engine, and you’ll know it will be done correctly. For these reasons, we recommend having your timing chain replaced by a mechanic. Additionally, an error in setting the timing correctly could result in pistons hitting valves, at which point the entire engine needs to be rebuilt or replaced. Replacing the timing chain is a complex and time-consuming process that requires partial disassembly of your engine.
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