The BMW timing chain is the connection between your vehicle’s camshaft and the crankshaft. The primary purpose of the timing chain is to open and close the inlet and exhaust valves at specific times, helping the engine to perform as it should. The timing chain is lubricated by the oil in your engine, and low level or poor quality oil can cause the timing chain to wear faster than usual.
If your timing chain breaks your car may or may not run. You will hear a clanking or ticking noise when it is on. If the chain has moved out of its correct position (jumped teeth) then you may have a big problem that can damage the valves and pistons in your engine.
If this happens, turn off the engine immediately. The oil ceases to move, then the oil gets overheated and can turn into solid carbon. If this happens, the hardened carbon can get stuck and block the nozzles that spray the oil.
To prevent issues with your timing chain make sure to have your oil and oil filter changed at the recommended times, usually every 7,000 miles. Using high-quality engine oils and oil filters will make a big difference in avoiding problems. With regular oil changes, you’ll ensure the proper oil level is maintained and that the timing chain is lubricated. In a regularly maintained vehicle, a timing chain can last up to 300,000 miles.
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There are some signs to look out for if you suspect your timing chain is causing problems.
If your engine is making any noises you should take your vehicle to a trusted mechanic quickly.