I have a 40-foot 2003 American Tradition with a 350 Cummins ISC with 69,000 miles. Today when traveling over the Cascade mountains, when I would use the exhaust brake when coming down the many steep grades I would switch the exhaust brake off at the bottom and step on the accelerator pedal the engine would feel like it was running out of fuel for about 20 or 30 seconds. Then, it would run fine. One time it sent a large white smoke cloud out the exhaust. It ran fine going up the mountain and on the flat. It only sputtered after coming down with the exhaust brake. Has anybody had this problem?
