untill its warmed up, at idle its noisey, a bit like a quiet diesel is bezt described. Its not the sound of metal on metal or nowt. The oil is fine, its recently been changed (1500 miles ago) The cam belt was changed last monday, I dont know if its started doing this since then or was before hand.
Theres no more smoke than normal out of the back, its runs fine, no loss of performance, but its still concerning as you'd expect.
Shoud I be concerned?