A few seconds after the start of the engine, incomprehensible clicks are heard. A creak is added to the clicks. When the car is fully warming up, the sounds are somewhat subtibute and become "silkness".
To find out the cause, we need to check the ripping mug, the prolium and the rubber band on the friction roller (near the pump). There is no one-digit solution, but there are cases where the reupholstery of the engine programme has been helpful.