The contact owns a 2017 Ford Edge. The contact stated that the vehicle was experiencing rough starts. The check engine warning light was temporarily illuminated. The vehicle was taken to the dealer, where it was diagnosed and determined that there was a misfire in cylinder #3. The dealer determined that a tune-up was needed. The tune-up was performed; however, the failure recurred, and the contact noticed that there was an abnormal burning coolant odor coming from the vehicle. The vehicle was taken back to the dealer, where it was diagnosed that there was coolant intrusion in the engine due to a crack in the engine block. The dealer determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and a case was filed. The contact was then referred to the NHTSA Hotline for assistance. The failure mileage was approximately 79,000.