Hi all I have a 2wd MK6 RS2000 and when driving short distances its an absolutely dream no problems what so ever.

But over long distances, as soon as the engine has warmed up i get a tapping noise from the engine whilst driving and idle.

I have checked and replaced the oil, the chain has been changed about 10,000 miles ago.

The engine has done about 115,000 miles.

Any ideas what it could be.

Thanks