can anyone help? I have a 1.6 FSi Sport and have just just had 40k major service + cambelt change. In the last two weeks I have noticed a rattling noise coming from the underside of the engine roughly between 2k and 3k revs whether staionary or moving. I have had the plastic shrouds off and there are no noticable loose items. I got my missus to rev the engine while I was under it and the rattle sounded like it was coming from the sump area......any ideas???