Here is the upload of my engine over the past few weeks and as you can tell its getting worse:
https://www.youtube.com/watch?v=UF4hyTLVCOQ
Thanks
The one at 22s and 33s I would put money on been the chain . The others could be injectors and tappets. You need to put your ear on the chain cover and listen to rule out it coming from other sources.
I have a noisy injector that sounds similar to yoyr quieter ones and it scares the crap out of me some mornings.
I have put them in order of time, so 1st and 2nd clips was about 4-6 weeks ago and the last two were from a the end of November.
As its in for a check at VW on monday, Im going to write a letter and leave it on the driver seat explaining what i think the problem is and im also going to burn an audio CD with the last two audio clips on it and put it in the CD player and make them listen to it before they do a cold start up. (leaving it over night, so they can start in the morning)
When they listen to the CD there is NO WAY they can say mine is normal. I will demand to listen to a 12 plate on the forecourt and show them the difference.
I have put my ear on the cover and it sounds really bad, but hard to tell where it come from, sound like mid to left of the engine.