Moin Moin I would have asked a question I drive because 991 Carrera S Bj 2012 with only 38000 Km After a tour on the weekend I noticed that the cracking of the single-fuel valves was louder than usual, the next day I went to the PZ center because of the cracking of the suspicion goes on initial status of an engine damage. So I ask myself at 38000 Km engine damage ? The vehicle was always at PZ for maintenance An endoscopy check was the first suggestion Has one also made such an experience Vi Elen thanks in advance for the help