IH1086-806-400Fan Posted February 5 Share Posted February 5 Our 806 has been weeping oil out of the exhaust manifold for a little while, and was just wondering if anyone knows what’s going on. We are using a coolant circulation heater, wonder if that is the reason. Quote Link to comment Share on other sites More sharing options...
brahamfireman Posted February 5 Share Posted February 5 Unburnt fuel, needs to get worked harder to get combustion chambers up to temp. 4 Quote Link to comment Share on other sites More sharing options...
1566Hog Posted February 5 Share Posted February 5 I agree. I have a 1066 that I put a reman 466 into. I think the injectors and pump were set to 225hp. Bigger turbo as well. The first job I had it doing, was pulling a water wagon in L1 at idle. I was watering my new tree belt with a garden hose as I drove along real slow. Started making a real big mess of the engine. Oil all over the place out the exhaust. I was pretty unhappy after spending that kind of money on the engine, pump, injectors, and turbo. However, I’m actually thinking (convinced) it’s unburnt diesel. I put the tractor to work- getting it up to operating temp, and putting a load on it. After that, it cleared up and never did it again. “Wet-stacking” is a term I’ve heard before to describe this issue. It’s not that uncommon actually from what I’ve read, and experienced. 1 Quote Link to comment Share on other sites More sharing options...
Farmall1066 Posted February 5 Share Posted February 5 Looks like it’s localized to cylinder 6, maybe a weak injector? Which is showing up in the cold, causing wet stacking. 2 Quote Link to comment Share on other sites More sharing options...
Gearclash Posted February 5 Share Posted February 5 My 856 did that terrible last winter on the mixer wagon. So bad there was “oil” running down the muffler. Engine never got heated up good from the short duty cycle. Plus, I strongly suspect, the straight #1. All went away when the weather warmed up. Those older diesel do not handle light duty so well. Quote Link to comment Share on other sites More sharing options...
Dzldenny Posted February 5 Share Posted February 5 My 706 does this. Doesn't seem to make a difference how hard I work it. Will go days weeks or months without. Then slathers itself for days weeks or months. I've been through the pump and injectors several times. I'm thinking it's injectors perhaps leaking internally or just not patterning well. It has a few cold blooded cylinders. Just need to get an infrared thermometer on it to see the lazy ones. Quote Link to comment Share on other sites More sharing options...
Farmall Doctor Posted February 5 Share Posted February 5 What is the actual operating temp? A properly working thermostat helps reduce wet stacking. 2 Quote Link to comment Share on other sites More sharing options...
IH1086-806-400Fan Posted February 5 Author Share Posted February 5 Thanks for the input, all it does is putt around the yard for around 15 minutes, running a little auger wagon. I think the reason that it also leaks from #6 is because it has a manifold leak. Quote Link to comment Share on other sites More sharing options...
Farmall1066 Posted February 6 Share Posted February 6 5 hours ago, IH1086-806-400Fan said: Thanks for the input, all it does is putt around the yard for around 15 minutes, running a little auger wagon. I think the reason that it also leaks from #6 is because it has a manifold leak. If it only putts around for 15 minutes, it’s getting nowhere near operating temp. Card board over the front of the radiator, and don’t let it idle under 1000 rpms may help a little?! Warmer weather, and getting it to operating temp, and working it, it will clear up! We have an 856, 766, and a 1066 that will do this same thing if not working! Quote Link to comment Share on other sites More sharing options...
IH1086-806-400Fan Posted February 6 Author Share Posted February 6 20 hours ago, Farmall1066 said: If it only putts around for 15 minutes, it’s getting nowhere near operating temp. Card board over the front of the radiator, and don’t let it idle under 1000 rpms may help a little?! Warmer weather, and getting it to operating temp, and working it, it will clear up! We have an 856, 766, and a 1066 that will do this same thing if not working! To your comment about the #6 hole leaking, the bottom nut was loose on the manifold, so at least it helped me find that. After running it to mix feed it quit slobbering oil everywhere, so everyone was correct about operating temp not getting high enough. 1 Quote Link to comment Share on other sites More sharing options...
Farmall1066 Posted February 7 Share Posted February 7 5 hours ago, IH1086-806-400Fan said: To your comment about the #6 hole leaking, the bottom nut was loose on the manifold, so at least it helped me find that. After running it to mix feed it quit slobbering oil everywhere, so everyone was correct about operating temp not getting high enough. Glad to hear it cleaned up after some work! Quote Link to comment Share on other sites More sharing options...
nepoweshiekfarmalls Posted February 7 Share Posted February 7 My 856 with M&W turbo is only used on the 3 point sprayer. One spring, it started wet stacking. I covered the radiator with a paper sack and sent Dad out to spray a load. Told him to keep an eye on the temp guage. It worked, no more issues! 1 Quote Link to comment Share on other sites More sharing options...
DT Fan Posted February 8 Share Posted February 8 Every-time this comes up I think how nice it would be if we all had a few acres we could go plow anytime! Give these old girls the workout they need. Of course if I had access to that I'd be out 'exercising' the herd all the time and wouldn't get anything done! 4 Quote Link to comment Share on other sites More sharing options...
Diesel Doctor Posted February 10 Share Posted February 10 On 2/8/2023 at 10:14 AM, DT Fan said: Every-time this comes up I think how nice it would be if we all had a few acres we could go plow anytime! Give these old girls the workout they need. Of course if I had access to that I'd be out 'exercising' the herd all the time and wouldn't get anything done! Grinding hog feed kept our 826 from "Wet Stacking". When we were blowing smoke, that exercised it for the week. The first time we put the 826 on the Arts Way grinder, we had to stop and tighten the drive belts. The 460D was a lot less HP than the 826. 1 Quote Link to comment Share on other sites More sharing options...
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