White smoke on deaccellerating, running hot hd16m

Demo, you might be getting coolant into the cylinders, White smoke while running is usually an indication of later injection timing, poor injection (low pump pressures/dirty filters) or water, since you are having a overheating problem also I would probably head towards coolant.  Tad

I have to claim ignorance on that particular model, so I speak in generalities, if it is turbo charged, maybe  turbo seals or low compression will cause white smoke but usually all the time not while decelerating. Is it using coolant or oil?? Running it out of fuel does not correlate to plugged filters, AC's circulate so much fuel continuously that if there was contamination it would have been picked up long before running out even if you were filling out of 50 gallon drums that had been sitting out in the weather, all the crud goes right to the bottom of the tank, right where the fuel pick up is.Was it doing this before it ran out of fuel? Has it been sitting for a long period of time? Tad

Edited by Tad Wicks - 04 Sep 2011 at 9:55pm

Since it didn't do it before you ran out of fuel a few things come to mind like cracking the injector lines while running to eliminate the possibility of an air bubble if any and the big thing, what kind of fuel did you refill it with? any water contamination will usually end up in the first(primary) filter unless it has a water separator and then if fills, will move to the next filter down the line, but by doing so restricts the fuel flow  (low fuel pressure). Not being a 16 expert by any means, I believe that the fuel goes through the torque converter for cooling as well, but I stand to be corrected on that.  Tad

Demo, exhaust leaks in enough volume will certainly effect turbo performance. I just changed a badly cracked exhaust manifold on my cousin's 6C and he gained a gear. If you can hear the exhaust ticking you are loosing what drives the turbo. As far as the white smoke goes I guess wait and see, it is obviously temp related, keep a close eye on coolant levels, and oil pressure. I have seen some engines blow white smoke when they were hot, but I mean screaming , misfiring hot, I don't think, at least I hope, that isn't your case. Maybe check the fins in the radiator with a good light or move it to use sunlight to see that all is clear and open, I assume it has pusher fan, that works great while moving dirt but in continual use like ripping or disking they don't work as well and can cause and overheating problem. Check your fan belt tension also. Tad