Smoking Boomer TC33D: New Holland Tractor Review  -- New Holland Tractors Discussion Forum and Review Smoking Boomer TC33D: New Holland Tractor Review -- New Holland Tractors Discussion Forum

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 10-27-2000, 22:14 Post: 20959
Jeff B



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 Smoking Boomer TC33D

I've got a smoking Boomer TC33D and had seen references to a "Smoke Screw" in earlier posts. Does anyone know where the screw is located and what the adjustment procedure is? Thanks in advance for the help.






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 10-27-2000, 23:53 Post: 20960
Bradey



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 Smoking Boomer TC33D

I had seen similar mentions in posts. Not to throw cold water on your idea, but let me relate a little tidbit I heard when I was shopping for a Boomer. I mentioned a smoke screw adjustment to a NH dealer after noticing smoke on startup. (I've come to the conclusion, at least in my limited experience, this is fairly normal among most tractors I've seen.) He said that owners shouldn't be making this adjustment. That it's factory set and any tinkering with it can affect your horsepower. I'm just passing it on for what it's worth, one dealer's opinion.






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 10-28-2000, 09:13 Post: 20962
Rick Seymour



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 Smoking Boomer TC33D

Jeff, When & for how long does it smoke? In "cooler" temps my TC29D smokes at startup for a few seconds. As it warms up the smoke goes away & at operating temps it never smokes. I would consider this normal for most diesels & have observed it on everything from 3 cyl boat and tractor engines all the way to a 12V72 Detroit Diesel. I am not a mechanic, it is just what I have observed. I agree w/Bradley & would not mess with the "smoke screw".






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 10-28-2000, 12:11 Post: 20965
Jeff B



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 Smoking Boomer TC33D

It blows dark gray smoke heavily for about 5 minutes regardless of outside temperature, then lightly after it warms up. At the beginning of the warm up, it also runs roughly, like its missing randomly. It smooths out after a couple of minutes. Only happens on the first start of the day. I'm using #2 diesel with stabilizer in it. My thinking on this is that I use the tractor at 7500 ft altitude, which is 2500 ft higher than my dealer (where it smoked significantly less) and probably quite a bit higher than at the factory where is was initially adjusted. I'd read in past postings that the screw was an air-fuel mixture adjustment, and thought it might need to be tweaked for my altitude. I don't want to mess with it unless I can learn the proper method, else I'd end up running the engine too lean. -Jeff






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 10-29-2000, 16:23 Post: 21005
Mike K



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 Smoking Boomer TC33D

I believe your problem is probably due to the altitude adjustment as well as using number 2 diesel fuel.Even though you are using additives, number 2 is not recommended. I would change fuel and see if the problem improves.I live at sea level and do not have smoking problems.Also make sure your temperature guage does rise some, the thermostat may be stuck not allowing tractor to run at the correct temperature. This could cause engine to smoke because when the cylinder wall temperature is cold, it will not allow complete combustion of fuel.






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 10-29-2000, 18:06 Post: 21007
John Shade



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 Smoking Boomer TC33D

I suggest having a dealer check the tractor. With respect to fuel, there have been many posts on the subject at this site. Without looking them up, I thought that #2 fuel was recomended for these small diesels. Isn't that what most fuel suppliers sell at the pump? Does that sound correct to you expects.






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 10-29-2000, 19:36 Post: 21010
Bird Senter

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 Smoking Boomer TC33D

OK, Mike, what fuel IS recommended? I'm like John. I never heard of a different fuel being recommended for altitude; just going to number 1 in very cold weather.






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 10-30-2000, 01:15 Post: 21022
Jeff B



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 Smoking Boomer TC33D

Manual says #2 is ok above 40 deg, #1 for under 40 deg or over 5000 ft altitude. I've been using #2 with stabilizer because its 30 minutes to nearest pump. #1 is an hour away. Should I invest in a larger fuel container and make the longer trek for #1? - Jeff






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 10-30-2000, 07:56 Post: 21023
Bird Senter

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 Smoking Boomer TC33D

Thanks for the information, Jeff. That's another new one to me. My Kubota manual calls for #2 diesel above 14F and #1 below 14F, but I don't find any mention of altitude. Of course I live at about a 400 foot altitude.






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 10-30-2000, 08:26 Post: 21025
TomG

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 Smoking Boomer TC33D

Usually following manuals won't hurt you, but sometimes you can end up doing things that aren't necessary. If you want to use #1, and accept the moderate loss of power or boosting it with a celtane additive, then check out nearby heating oil dealers. Some dealers admit their furnace oil actually is #1 diesel. You might want to try a tank or so of #1 and see what happens.

Before committing yourself to #1, you might want to check out some other things that might produce what you describe. At least I'd want to make sure that the reason that the tractor smoked less at the dealer was not that it was a lot warmer day there than where you usually run the tractor. I'm a little short on my diesel theory, but some of the things that can produce some of what you describe are: a bad glow plug, air in the fuel line, low compression (a cylinder never comes up to operating temperature), bad injector patterns. Other causes might be poor injector pump engine or spill timing. And the list goes on, including the engine governor. You should be able to tell I'm mostly reading from my repair manual.

Regarding the question about fuel air mixture. I thought about it, and the idea of fuel/air mixture may be more of a gas engine concept. Could be wrong, but I think that diesel engine RPM is entirely determined by load and fuel delivery. Diesels, unlike gas engines, do not have throttle valves or other devices other than RPM to change the airflow through the engine, so fuel delivery would be the only other variable. An injector pump is a variable displacement pump that is controlled by the throttle, and increasing or decreasing fuel would be equivalent to a throttle change. I suspect that if the pump supplies too much fuel for the thin air, then the engine would just run at a higher RPM. Hope somebody will straighten me out if I'm wrong. Oh yes, I used to camp in Colorado at those altitudes. I remember the beans were cold before they hit the plate, and the coffee never got hot. I imagine a diesel has to struggle to cope as well.






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Discussion Boards > Active Subjects > Messages as Posted > New Holland Tractor Review Forum

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Bird Senter 2 | Bradey 1 | DavidV 1 | Jeff B 5 | John Shade 1 | Mike K 2 | Rick Seymour 1 | TomG 3 |




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