Once again I need to call on the collected wisdom of the list.My 8V92TA (DDEC-II) is acting up again. I am noticing a increased amount of black smoke under load, especially moving from a dead stop. Subjectively, I am suffering a loss of power as well, with low acceleration off the line. And, under load, such as pulling a 6% or so grade, temperatures are skyrocketing, and I am having to stop periodically to let the engine cool down.Turbo boost pressure and fuel delivery rates seem normal, and the cooling system looks normal (fans spinning, coolant level OK, etc.). Someone has already suggested dragging brakes, but I have temperature sensors in the wheels and all read normal.Yesterday I replaced the air filter, on the chance that it was restricted. No change. I also have a reader (Silverleaf VMS200) on my DDEC -- there are no codes and no abnormal readings, as far as I can tell. Fuel filters were just changed, and my primary is a Davco FuelPro 380 so I can see that it is not restricted.I am looking for suggestions on other things to check before I take it in to the shop for professional diagnosis.Thanks.-Seanhttp://OurOdyssey.BlogSpot.com
Quote from: Sean on July 15, 2007, 01:11:01 PMOnce again I need to call on the collected wisdom of the list.My 8V92TA (DDEC-II) is acting up again. I am noticing a increased amount of black smoke under load, especially moving from a dead stop. Subjectively, I am suffering a loss of power as well, with low acceleration off the line. And, under load, such as pulling a 6% or so grade, temperatures are skyrocketing, and I am having to stop periodically to let the engine cool down.Turbo boost pressure and fuel delivery rates seem normal, and the cooling system looks normal (fans spinning, coolant level OK, etc.). Someone has already suggested dragging brakes, but I have temperature sensors in the wheels and all read normal.Yesterday I replaced the air filter, on the chance that it was restricted. No change. I also have a reader (Silverleaf VMS200) on my DDEC -- there are no codes and no abnormal readings, as far as I can tell. Fuel filters were just changed, and my primary is a Davco FuelPro 380 so I can see that it is not restricted.I am looking for suggestions on other things to check before I take it in to the shop for professional diagnosis.Thanks.-Seanhttp://OurOdyssey.BlogSpot.comHello my name is Ric I just joined so I am not sure how to put replies up but it could be your turbo I have a 92 series sitting on my shop floor with a small piece out of a piston and the piece went through the exhaust and took a good bite out of the exhaust side of the turbo. It still ran after that happened but the engine was lazy and it blew a fair bit of smoke. I am not saying your engine lost a piece of piston but it could be a faulty bearing in the turbo. I could get into other reasons but I don't have time. If you could help me figure out how to post this it would be appreciated as computers are not my thing. Hope I could help. Bye for now.