The contact owns a 2018 Ford F-150. The contact stated that upon starting the vehicle, there was an abnormal knocking sound coming from the vehicle. There was no warning light illuminated. The contact stated that the transmission was shifting hard while depressing the accelerator pedal. The contact used a code reader to attempt to determine the cause of the failure but was unable to retrieve a fault code. The vehicle was taken to a dealer however, the cause for the failure was not yet determined. Upon investigation, the contact discovered that the failure was related to the cam phasers. The vehicle was not repaired. The manufacturer was also notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The failure mileage was approximately 65,000.