Ok, have a good day.
There may be some dasting flaws , we have had quite a few of these lately.
Ok I change oil around 5000Km and not 10K.
Today I replaced camshaft, adjusted valves and feel like I have a brand new car!
So quiet and smooth. No more rattle.
One more question, If timing chain out 1 chain link or half a link is it make trouble codes -segment time incorrect- or not? Before I removed timing chain it was not aligned properly the 2 marks on camshaft gears to mach horizontally with camshaft holder in middle line, it was above ~5mm when crankshaft was on TDC.
I have seen a few do that and yes they coded .
You might have a tensioner issue. The chain guides are wearing out on a few of these.