D-15II fueling problem
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=137217
Printed Date: 08 Nov 2025 at 9:05pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D-15II fueling problem
Posted By: Butch(OH)
Subject: D-15II fueling problem
Date Posted: 10 Apr 2017 at 8:00am
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My D-15II gas has an issue that has me baffled. It gets enough gas to the carburetor to piddle around but when you put some demand on it it will run out of fuel after about 30 seconds and quit but start back up 5 seconds later when the fuel catches up. I have cleaned the sediment bowl and removed the hose form the carb and it runs a big stream until you are tired of watching. Tank is spotlessly clean. Also when you open the drain on the carb it runs more fuel than the tractor would use. Took the carb apart including the fuel elbow, everything is clean. Anyone want to take a stab at what is going on? Funny thing is I remember Dad's D-15 having this exact same issue when it was brand new and after going back and forth with the dealer about it he made them send a mechanic out and stay until it was fixed. That was 55 years ago and I cant remember what they did but it was something odd. |
Replies:
Posted By: DrAllis
Date Posted: 10 Apr 2017 at 8:08am
| Hole in the carb inlet valve seat too small??(like an after-market seat not to correct sized specs?) should be same needle/seat as WD-45 and D-17. Something inside carb above the seat floating around blocking the fuel flow?? Float dragging on the carb bowl sides?? Fuel tank cap not venting? (not likely) The rubber hose is deteriorating inside and a flap inside blocks flow when demand is high. spent a lot of time on one of these and fuel flow was never an issue. |
Posted By: Gary Burnett
Date Posted: 10 Apr 2017 at 8:08am
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Did you take the jets out of the carb? I've seen a small piece of rust get in the jet that would turn when air came thru it to obstruct the gas flow.Also are the small holes that feed the main jet open? I've seen those so packed I had to drill them out and they looked like no holes were there. |
Posted By: dt1050
Date Posted: 10 Apr 2017 at 10:31am
had a ford do the same thing took the carb apart and cleaned it, then used my air compressor to blow out the all holes in the carb......make sure the carb is empty first or you'll get a shower in gasoline. also could the float have a pin hole in it. took one off the international heard gas in it. left it drain out and sit for a week. tried to solder it and it exploded  ....I don't recommend that. just get a new float!!!------------- Just cause it's orange don't make it a tractor, there's only one..Allis Chalmers |
Posted By: Brian Jasper co. Ia
Date Posted: 10 Apr 2017 at 10:48am
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I had a bumble bee get in my tank once. It would float around and intermittently block the tank drain and stall the engine. No rhyme or reason to it. I took my Oliver 60 on a tractor ride out of Maryville MO and had a similar problem. I hadn't done anything other than fill it with fresh fluids after I had gotten it from sitting 30 years. It turned out to be there was a hole in the screen in the sediment bowl and a fly had made it's way up to the back side of the float valve. Just like the bumble bee it choked off the fuel and stalled the engine. Nothing like pulling a carb apart in a city park. We ran the rest of the day without issue... ------------- "Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford |
Posted By: Dean(IA)
Date Posted: 10 Apr 2017 at 11:52am
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Warren Byerly, my brother, had a D-15II with the very same problem. He had replaced the gas hose to the carburetor with black rubber hose. It disintegrated over time and pieces would come loose and get in the carburetor. He then replaced the hose with the correct D-15II gas,hose designed for gasoline from AGCO. It solved the problem. HTH Dean |
Posted By: CTuckerNWIL
Date Posted: 10 Apr 2017 at 11:57am
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My neighbors 770 Oliver was doing that but wouldn't always start back up right away. I changed the coil, checked the points and such. Thought I had it and it died again on me. I finally found a couple of those stinking orange lady bugs in the tank. I was SURE the tank was clean and had fresh gas but........... ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: tadams(OH)
Date Posted: 10 Apr 2017 at 2:14pm
| I had a truck do that once and the ground wire was on the points. |
Posted By: Gary Burnett
Date Posted: 10 Apr 2017 at 3:16pm
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Also might try switching the condenser when they go bad sometimes it'll make the tractor act like its running out of gas. |
Posted By: Butch(OH)
Date Posted: 25 Apr 2017 at 7:12am
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Well Dr, you earned your name once more. Took the carburetor apart once more and found a burr in the top of the seat that was about 3/4 blocking the hole. Runs fine now, Thanks you! |