What Is A Timing Chain? A timing chain synchronizes the rotation of the crankshaft and camshaft(s) ensuring proper timing and allows the engine's valves to open and close during each cylinder's firing. The chain is located inside of the engine and needs to be lubricated by the oil in the engine, making oil maintenance important as well. Every time you use the engine, the timing chain is in use. Are These Chains Coming With Timing Marks? Each chain has a Timing Chain mark for easier installation. When changing the timing chain or adjusting timing on a vehicle, understanding the timing marks on the crankshaft and camshaft pulleys is key to getting it right. .
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