FANTASTIC. 4 days after I give the golf some TLC and spend £270 on a full service & cam cover gasket change what does it do?
Thats right! Starts sounding like a diesel on idle.
Took it to the garage and we both reckon its the hydraulic cam chain tensioner. (Note, this has nothing to do with the cambelt/tensioner).
I've read it could be due to low oil pressure from sludge build up? I'm literally unable to afford the new tensioner priced at 280 quid from VW and all the work involved, so if anybody likes doing favors in return for what little cash I can offer you, get in touch!
Otherwise, any advice would be fantastic.