It does sound like the manifold. I have documented my experience with this in another thread:UKS4APR1 wrote:Hope it's not the dreaded/expensive Exhaust manifold rattle as often discussed on here.
Think you should start by reading this post....... http://www.rs246.com/index.php?name=PNp ... old+rattle
http://www.rs246.com/index.php?name=PNp ... ic&t=55438