If it doesn't fix it try moving onto the vanos unit we changed the chain in ours and it still ticked and rattled it was only when I had two new vanos units fitted that the noise fully disappeared ,car has given zero trouble now since, touch wood
If it doesn't fix it try moving onto the vanos unit we changed the chain in ours and it still ticked and rattled it was only when I had two new vanos units fitted that the noise fully disappeared ,car has given zero trouble now since, touch wood