The contact owns a 2017 Ford F-150. The contact stated that after the vehicle was started, the vehicle was idling roughly. In addition, the contact stated that there was a rattling sound coming from the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed with timing chain failure and a fractured timing belt adjustor. The contact was informed that the timing chain needed to be replaced, and the adjustor needed to be tightened. The vehicle was not repaired. The dealer was made aware of the failure. The vehicle was scheduled for an upcoming diagnostic test. The manufacturer was made aware of the failure but provided no assistance. The failure mileage was unknown.