Why has the timing chain been making a very loud noise?

@carlosfern12047 commonly that noise increase when a timing chain is worn out and the chainlinks have lengthened. This will increase the noise as well. In cases like this, the chain would need to be replaced.

Your Dacia should be the same as a Renault. The issues with that is, that it does not show a chain but a timing belt. We need to know what exact engine your Dacia has to verify that this is a timing belt and not a timing chain.

Now, if you have any increased noise coming from that, it is possibly a bad belt but more likely bad bearings, even on one of the accessories. See if you can narrow down where the noise is coming from.