BMW F10 N47 engine timing chain problems
Is the timing chain a problem on the BMW F10 520d N47?
Yes. The N47 diesel is the best-known common fault of the F10/F11, and timing end problems have occurred more than with the N57, even though the parts are largely the same. The problem affects N47 engines up to 5.3.2011, and engines built after that received a fix.
How do I recognise a timing end fault?
At idle there is a periodic scraping or dragging noise. A timing end overhaul is then probably ahead. In a petrol engine, a fault in the chain or the oil pump chain can sound like a whine that varies with engine speed.
Is an aftermarket timing chain kit a reliable option?
Aftermarket kits can contain parts from different manufacturers, and quality varies. Shops' parts are often divided into budget, mid-range and top-quality sets. Check the manufacturer of the chain kit and keep the most important parts high quality; many use the chain kit and other parts as originals.