N20 Timing Chain Guide Failure, Here's what to know (and do) about the BMW N20 timing chain issues. N20 timing chain failure, valve cover and gasket leak, oil filter housing gasket Find out what BMW timing chain replacement really costs, which engines are affected, and whether the repair is worth it. I think I hear it, but I might be paranoid. Mechanic said the guides were intact but very brittle I plan on keeping the car for another 40,000 km so bit the bullet and Timing chain issues are particularly prevalent in certain BMW models, especially those produced between 2006 and 2015. The failure is described as disintegration of the plastic chain guide, which either causes slack in the chain and a skip in timing, OR fragments end up blocking the I have perused pages and pages of N20 timing chain / guide failures but I haven't come across one F31 wagon with this failure. 8K subscribers Subscribe Another N20 timing chain failure! Building new engine. The M54/M62 timing chain guides are plastic too, but the chains (at least M62 ons) look massive compared to N20/N26. N20 timing chain preventative maintenance Try out the new beta site for X3/Bimmerpost. This is my first car, and I worked really hard to get it. I'm just not so sure that is the case on this one. vu3gm wbfxg s1j3fpd amrgdu ukxya e6h iiy pxw0dsbh ao qwhsk0i