Three problems related to gas recirculation valve (egr valve) have been reported for the 2008 Ford F-350. The most recently reported issues are listed below.
I noticed a plum of white smoke out the tail pipe. That indicated steam, water in the system to me. All the gauges were normal and I stopped the vehicle and checked the fluid levels. No obvious problem. I called my local Ford dealership and they could not get it in for 36 hours. I drove it . 4 miles home and parked it. At the appointed time I drove to north country Ford. It took them another day to find the diesel mechanic who could work on the vehicle. 24 hours later I am told the engine is blown; fluid got into the manifold and was sucked into the # 3 cylinder. Depending on the amount of parts that could be salvaged the cost of replacement could exceed $ 12,000. This vehicle has 95,000 miles on it. It has had tow other incidents with the engine and drive train: in December of last year, in preparation for a trip to arizona I had the transmission serviced. About 1400 miles later the transmission began to slip when we encountered any hills or mountains. I parked the trailer and took the tuck to cassa Ford. They had the truck for 4 days and $ 1600. 00 worth of repairs. I asked if anything done at the time it was service or the driving from the first sign of trouble had caused or exacerbated the problem. They said no, it was a pump problem. In 2011, it began to blow black smoke out the tailpipe; the dash screen indicated it was cleaning the exhaust. Within 5 minutes the engine sputtered and died. I called Ford I was told to wait an hour and try to restart the vehicle; give the engine an opportunity to ¿re-set¿ itself. That didn¿t work! a tow was sent and the vehicle towed to nelson Ford dealer in fergus falls, minnesota. It was a failed egr valve. The repair was covered under warranty.
Was driving at approximately 40mp when the engine just stopped and lost power. This happened on 2 more occasions. Once while pulling out onto a busy street, and was almost hit by oncoming traffic. Cannot risk injury, so took it right to a reputable local diesel mechanic. Diesel mechanic states that entire fuel system must be replaced. Faulty hi pressure fuel pump disintegrated and sent metal thru fuel system. This will cost $8000 to fix. Was told this was the first year "bug" for a new design. Ford will not replace parts or warranty this. Common on this model, but definitely a safety hazard, as the truck may or may not stall when giving gas. It is unpredictable.
2008 Ford f350 super duty. Attorney representing consumer writes in regards to engine problems, egr valves and high pressure fuel pumps failure that manufacturer has failed and refused to repair.