18-08-15, 02:57 PM
Whilst this doesn't fit totally in with your symptoms other than the bag of nails noise and the proximity to the clutch, I thought I'd throw into the mix that the automatic cam chain tensioners can fail. There were some scares a while back which resulted in a number of us ditching them and fitting manual tensioners. I seem to remember that you can 'reset' / check the automatic tensioner in case it has stuck and is not operating properly which might be worthwhile. Undo the 10mm bolt at the end of the adjuster and use a flat bladed screwdriver that will fit down the barrel to find the slot at the end of the piston, make sure that it freely turns in both directions.