My D14 is a gas hog,,,,,,
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=146383
Printed Date: 14 Oct 2025 at 12:32pm
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Topic: My D14 is a gas hog,,,,,,
Posted By: desertjoe
Subject: My D14 is a gas hog,,,,,,
Date Posted: 12 Jan 2018 at 10:07am
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Howdy,,,Guys,,,,,The D14 Backhoe/Loader I rebuilt bout 3-4 years ago is causing me some grief due to it drinkin the gasoline like thet ain't no tamarrow,,,,!! I usually put in 5 gallons at a time and it has run out of gas several times recently. I only use it for maybe an hour at a time and most times is just idleing usin the loader . The engine runs real smooth with NO missingand no fuel leaks,,, Some of ya'll may remember,,this is the 149 ole AJ, JohnKc and Dave Kamp "Allis Expressed" it from halfway across the United States almost to my front door,,,  ( THANKS Guys) It had the "domed" pistons that are still in it. I rebuilt engine with new everything and always starts almost on a dime,,, The carburator is a Marvel Schebler, I bought from a member here and tag is SX 670 with 57- 6 under that number. I just checked the setting on the big knurled screw at top front of carb and is set at 1 3/4 rounds open. This is where it wants to run the smoothest. Is there anything else I should be lookin at,,?? I can't imagine tryin to use this tractor as is for a full day,,you'ld be havin to get a fuel trk to follow you across the fields,,,,, |
Replies:
Posted By: DougS
Date Posted: 12 Jan 2018 at 10:11am
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Is it smoking black smoke? Are the plugs fouling? These would be signs of an improper mix. Do you have any neighbor kids who carry a siphon hose in the trunk of their car? |
Posted By: JoeO(CMO)
Date Posted: 12 Jan 2018 at 1:17pm
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My D15 II I had about 5 years ago was using alot of gas, I knew what was happening so I started putting only about a gallon at a time. Sure cut down my gas bill. One time I returned to farm and culprit numbnuts had removed the fuel line, sediment bowl and mount from the tank, left all the parts on top of hood, nothing missing! I even left a gas can out with a little moisture in it. About two weeks later in the next town at O'Reillys, a person who was at the top of my list mentioned his kids don't check cans before using them. I just kept walking. ------------- |
Posted By: BenGiBoy
Date Posted: 12 Jan 2018 at 1:39pm
LOL, I know a guy who had problems with his employees stealing gas from his cans so he filled them with water.... the next day he knew who it was because they didn't show up for work.  (I work for him now.
 )------------- '39 Model B Tractors are cheaper than girls, remember that! |
JoeO(CMO) wrote:Posted By: Gerald J.
Date Posted: 12 Jan 2018 at 2:56pm
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Tuning the carb for smoothest running usually sets it way rich. The first farm year with my gas 4020 it used 4 times the gasoline that my MF-135 took working the same acres, but with bigger implements. It smoked black at idle and like a IH diesel when the throttle was opened. I weaned it to twice the fuel of the 135 over time. I found the top of the Donaldson precleaner was domed down acting as a partial choke. I found mud dauber nests in the intake. I found the dry air filter dirty and I found the sheath of the choke cable was not anchored near the carburetor and that was limiting the choke opening to about half way open. I fixed all of those and cut the gas consumption. I found plowing with the MF135 that running the main jet on the rich side gave more power for pulling. Standard practice with piston aircraft engines is to run them full rich for take off for maximum power, and then at altitude reduce the gasoline until the exhaust gas temperature rises 400 or 500 degrees F for most economical flying. Carburetor adjustments usually are for maximum speed with the throttle held in a fixed position. First adjust the idle jet or air screw with the tractor idling about as slow as it will go, hold the throttle shaft fixed, then open the throttle at the carburetor and adjust the high speed jet for maximum speed with the throttle shaft anchored (possibly unhooked from the governor for the adjustments), then the idle mix needs more adjustment as the two adjustments interact. Repeat the sequence several times until adjusting either one has any more effect. Then hook up the governor again. Gerald J. |
Posted By: darrel in ND
Date Posted: 12 Jan 2018 at 3:23pm
| That's odd. My D14 is pretty conservative on gas, as well as are my D15 and D17. Now my D19 and one ninety gasser are a different story. But that's normal for them. Darrel |
Posted By: DrAllis
Date Posted: 12 Jan 2018 at 3:48pm
| Nebraska Test shows a D-14 gasoline tractor will burn exactly 3 gallons per hr at 100% load. Those backhoe/loader engines work pretty hard due to the excess chassis weight, the shuttle clutch drag and hydraulic pump flow volume. |
Posted By: LeonR2013
Date Posted: 12 Jan 2018 at 4:25pm
| You know that sounds pretty economical to me, so Joe you should be doing a lot better than you are. Is your carb. made for that engine, or something else, like a D19? I don'T know where you could find them, but start looking for a smaller jet. If you happen to get one that is too small you can take wire size drill bits and open them a little bit at a time until you get it just right. Leon |
Posted By: DSeries4
Date Posted: 12 Jan 2018 at 8:44pm
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Are there any leaks in the gas tank? I find mine to be very frugal. ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Posted By: shameless dude
Date Posted: 12 Jan 2018 at 9:19pm
| Joe....puts more gas in, then it'll run longer! (poke,poke,poke) |
Posted By: desertjoe
Date Posted: 12 Jan 2018 at 9:31pm
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Hey Doug,,,,engine does not blow any black smoke at all, I went ahead and pulled the plugs this mornin and they are carboned up a little which does indicate too much gasoline,,,, Dr,Allis,,,the 3 gallons is just about what this one is swallowin in bout a couple of hour's work,,but doin it at no more than 20 % throttle. I doubt I have ever had to throttle up more than 50%,,,just have'nt had a need to yet,,,, The carb I bought (SX 670) was susspossed to be for a 149 but now I'm thinkin it either must be for a much larger engine or PO has changed the main jet to a bigger size,,,??? There are NO LEAKS anywhere,,,, anybody know which main jet it should have in carb,,,?? What else should I be lookin at or for,,??? |
Posted By: desertjoe
Date Posted: 12 Jan 2018 at 9:36pm
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Shameless,,,,,,,,,what can I say,,,,,,??? You is just plumb full of chi,,,,,,er,,,,,,smart sayings,,,I sure do swear,,,you gots to have you a book of smart as,,,Um,,, sayins,,, I mean,,,,,,you is,,,,,you,,,,chit,,,lost my train of thinkin,,,,,,,later,,later,,,,,,
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Posted By: MACK
Date Posted: 12 Jan 2018 at 9:48pm
| I have a forklift with a D15 engine that likes it's gas. Guess I should shut it off every time I get off. MACK |
Posted By: dt1050
Date Posted: 13 Jan 2018 at 4:59am
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my d14 doesn't seem to use much gas for a gas tractor. it's a bit of a hog, when you consider it replaced my 5020 that used 1.7 gallons an hour of fuel. lol. ------------- Just cause it's orange don't make it a tractor, there's only one..Allis Chalmers |
Posted By: desertjoe
Date Posted: 13 Jan 2018 at 5:38am
You mean you got to shut em off when you done with em,,,,????
 |
Posted By: WD45
Date Posted: 13 Jan 2018 at 12:49pm
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Have you cleaned the air filter cup and replaced with clean oil. ------------- Fred Dunlop, G,B,CA, WC,WF, 3 WD45`s,gas, diesel and LP,U,D10 series III, D12,D14,D15 SERIES II,D17 Series IV in Gas and Diesel ,D19 GAS and D21,170 185,210 ,220 an I-600 8070 fwd, 716H and 1920H |
Posted By: Richardmo
Date Posted: 13 Jan 2018 at 1:11pm
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We have a John Deere 2010 loader/backhoe tractor and it is gas. Seems like it is also a gas hog. |
Posted By: Gary Burnett
Date Posted: 13 Jan 2018 at 3:43pm
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Something must be wrong I have a gas D15 and its easy on gas even when I'm doing things like disking. |
Posted By: Gary Burnett
Date Posted: 13 Jan 2018 at 3:44pm
Your 5020 burned 1.7 gals /hr? Can't imagine putting that much fuel thru it. |
Posted By: DougS
Date Posted: 13 Jan 2018 at 5:40pm
| Awwwww c'mon. I looked it up. A John Deere 5020 uses over 8 gallons per hour. <gdr> |