[youtube][/youtube]
Does it cause damage to the engine every time it happens (even if so rarely)?
EDIT Another thread:
http://www.sciroccocentral.co.uk/forum/ ... 25&t=11007" onclick="window.open(this.href);return false;
I actually have no idea if it's the timing chain, or the chain tensioner, or the camshaft adjuster solenoid valve, so I removed the timing chain speculation

I'm just wondering if it a real problem or just an annoying noise (which only happens very rarely).