The contact owns a 2017 Ford F-150. The contact stated while driving at an undisclosed speed, there was an abnormal rattling sound coming from the vehicle and the vehicle was idling rough. The contact stated that the check engine warning light was illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The vehicle was scheduled for a diagnostic test. The contact stated that the vehicle was previously repaired, and the cam phasers and timing chain was replaced. The manufacturer was made aware of the failure. The failure mileage was approximately 99,000.