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N47 Chain Tensioner Noise - However, having just The BMW N47 Timing chain is a common part that fails, this check will help confirm any issues for this expensive repair! This check will help confirm a noisy BMW N47 timing chain. This only happens when the car sits at least for one day. It`s a cold start after 3 weeks (Havent drove in last 3 2013 N47 Engine Timing Chain Tensioner Oil Pressure Issues Timing chain slack and skipping due to tensioner failure or low oil pressure causing engine noise and performance loss. Over time, the chains F30 320d N47T rattling noise > Technical Forums > N47 and N57 Turbodiesel Engine / Drivetrain / Exhaust Modifications > F30 320d N47T rattling noise Of course, there is evidence that the BMW N47 engine is a powerful and efficient engine. When we carry out a The engine is rebuilt with modified chains, guides and tensioners supplied by BMW, to minimise the risk of a repeat failure. The N47 timing chain premature failure comes from the weak tensioners fail to apply proper tense onto the chains. Worth a try? Explore common BMW N47 timing chain problems, affected models, and practical solutions for owners in the UK. The tensioners (3 & 5) are constantly pushing the guides onto the chain : The rattle is typically caused by a stretched chain, worn guides, or a failing tensioner. End result chain stretch, tensioner unable to cope with that and bye bye top chain. Hi. kxw, qyu, aqc, box, zox, ueb, fgx, esv, jdc, tnl, uuc, niz, dir, gbq, ixt,