8070 sputtered and died
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=198037
Printed Date: 12 Nov 2024 at 8:54am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: 8070 sputtered and died
Posted By: SteveM C/IL
Subject: 8070 sputtered and died
Date Posted: 02 Nov 2023 at 10:26pm
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Was working dirt and turned on the end and about 1/2 way through the turn it coughed and sputtered a couple times and flat died. Has half tank of fuel. No lines leaking any where. New fuel filters and the tanks were just put back on empty and dry last week. Linkage on pump works on the outside. (M100) I bought this last winter and appears to have a rebuilt pump. Shiny black paint and a sticker. I got it from a jockey and he got it from an estate in MN so there's no history. Where to begin? Pull plate off pump drive and have a look? Starter spins it but no fire or smoke. It's over 1/4 mile from my shop. I don't think you are allowed to pull one dead because of lack of lube in trans/rear end. PS if it matters. How does one trouble shoot this? TIA
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Replies:
Posted By: 55allis
Date Posted: 02 Nov 2023 at 11:27pm
Sounds like fuel…
I think those have the electric kill?
If it does it probably has a bad wire/connection to the injection pump.
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1955 AC WD45 diesel with D262 repower, 1949 AC WD45
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Posted By: DrAllis
Date Posted: 03 Nov 2023 at 12:51am
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I would start by disconnecting the fuel supply hose coming from the tank to the first fuel filter at the filter and be sure gravity will flow gushing fuel. That line originally went over the bellhousing, but many of us re-routed it under the bellhousing for better and easier fuel flow. Start there to make sure fuel can get out of the tank. Possible plugged fuel fill cap vent ?? EDIT: The hose that hangs on the outside of the injection pump above the throttle lever connects to the pumps hydraulic head. If you remove it or loosen it and crank the engine, fuel should gush from this hose. No fuel?? no run. No fuel, then start back at the first fuel filter for tank supply. Got fuel?? something in the pump itself. This would be transfer pump fuel flow at 80-100 psi when running.
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Posted By: darrel in ND
Date Posted: 03 Nov 2023 at 6:15am
My 8070 did that a couple years ago. Was a fuel restriction. I will never figure out where it came from, but my son found a quarter sized rubber disc stuck somewhere in the fuel line. Don't know if it was lodged somewhere since the tractor was new, and finally broke free and plugged the line, or if it somehow got into my fuel. But that was the smoking gun.
Darrel
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Posted By: injpumpEd
Date Posted: 03 Nov 2023 at 8:32am
sputtering and dying tells me it ran out of fuel supply like mentioned above. I'd think if head in pump seized, it would have just died immediately, or transfer pump shaft can break, no longer turning the transfer pump in rear of pump and governor assembly. Like Dr said, see where you have fuel flow and where you don't, that will tell the story.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Posted By: SteveM C/IL
Date Posted: 03 Nov 2023 at 9:34am
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Turns out the line connected to the first filter was not tight going to the pump suck an air voila fixed. This thing has been tore clear part all summer so it's no wonder that a thing or two got missed!
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