Ford F-550 owners have reported 2 problems related to engine knocking noise (under the engine and engine cooling category). The most recently reported issues are listed below.
The contact owns a 2012 Ford F-550 sd. The contact stated that while driving approximately 20 mph, a loud banging sounded was heard inside the cabin and the engine power reduced substantially. The engine was turned off and restarted, but the failure persisted. An independent mechanic diagnosed the vehicle and detected that the turbo became stuck and the turbo hose disconnected. The hose was reconnected; however, the failure continued. The vehicle was not repaired a second time. The manufacturer was not notified of the failure. The approximate failure mileage was 45,000. The VIN was unavailable.
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The contact owns a 2006 Ford F-550. The contact stated that when driving the vehicle for a short period of time and shutting off the engine, the vehicle fail to start or would stall once restarted. The vehicle was inspected by a dealer and they advised her that there was a loud knocking noise from the engine caused by a malfunction in cylinder number eight. In addition, the rolling barrier had also failed. The vehicle was repaired. The failure mileage was approximately 164,000.
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