In recent times there has been a terrible noise (crack) from my bike. It comes from the area around the bottom bracket/cranks. I have changed the chain recently, taken off the pedals, crank and bottom bracket and given them a proper lubrication. But the sound is still there.
It occurs only when I press hard on the pedals, or when standing up in the slopes. Could it come from the cranks? My bike is a Pinarello F4:13 (MY 2006) and the crank is labeled "Pinarello" but I suppose they come from Campagnolo. Other components are a hybrid of Campa Chour and Centaur.