Hello! I'm having aswell a BMW 118d with N47 engine. Car has done 126000km (almost 80000miles) and i have the ticking sound few minutes after the cold start. When warm the engine stops ticking. I mention that the sound comes from the distribution chain and here i ask.

Is there recommended to replace the chain tensioner with the new updated version? Would i do something bad to the chain assembly? I don't see any other thing causing the rattle of the chain other than the tensioner (or maybe a stretched chain already).

I see it's a fairly easy job, probably hard to reach bolt but would u recommend me to do it? Or maybe wait and replace all elements which cost quite alot .