One problem related to loud engine noise has been reported for the 2008 Ford F-550. The most recently reported issues are listed below.
Tl the contact owns a 2008 Ford F-550 sd. While driving 65 mph, the contact heard an abnormal noise coming from the engine compartment and the vehicle stalled. The check engine and engine overheating indicators illuminated during the failure. The vehicle was towed to chapman Ford of horsham (1100 easton rd, horsham, PA 19044) where it was diagnosed that the engine failed. The vehicle was not repaired. The manufacturer was notified and stated that the vehicle was out of warranty. The failure mileage was 33,000. The VIN was not available.