After a hard drive with plenty of VTEC, a noise appears. It comes from under the bonnet and I hear it when I drive slowly over bumps and potholes. Nothing when the road surface is smooth. If I stop the car and let it cool down and then drive again, the noise disappears, and after driving hard it comes back. The noise sounds like "crok, crok, crok". As if something is loose and jumping around in a confined space.

 

You've got me fella.

Only noise i get is "clicking" when the brakes and exhaust are cooling down.

 

Time to visit a dealer I think.