Allis 6080 fuel issues
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=203434
Printed Date: 29 Sep 2024 at 5:35pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Allis 6080 fuel issues
Posted By: HoustonM
Subject: Allis 6080 fuel issues
Date Posted: 29 Sep 2024 at 1:04pm
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I have a 6080 we use to bale with, while using it this year it started idling higher and lower on its on and eventually dying. It wouldn’t start for a couple hours then once it did it would only run for a few minutes. Got it home and pulled the return fitting off and there was no junk or anything in it. Went ahead and ran a hose from the injector pump into a separate tank to rule out crud floating in the tank. It would just do the same thing. Hard to start and once it starts it’ll only run for about 5 minutes. The injector pump was rebuilt in 2020 at Cordell’s in Oklahoma. Any ideas would be welcomed
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Replies:
Posted By: DrAllis
Date Posted: 29 Sep 2024 at 1:18pm
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Outlet to the fuel tank plugged.
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Posted By: HoustonM
Date Posted: 29 Sep 2024 at 2:41pm
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Thanks for the help. Blew the line out and the tractor seemed to start easier. It ran about 10 minutes before spitting and sputtering before dying again. That’s the longest it’s ran so far. I took the return line off and ran a clear hose into an empty bucket just in case that line was just plugging back off. It started right up again and did the same thing. Ran about 10 minutes and started sputtering erratically before dying.
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Posted By: I M Fedup
Date Posted: 29 Sep 2024 at 2:54pm
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So you have (I assume) eliminated both supply and return lines as part of the problem. What's left other than the pump, regardless of when it was rebuilt?
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Posted By: HoustonM
Date Posted: 29 Sep 2024 at 3:19pm
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That’s where I’m at with it also. Was just picking some brains that know a little more than I do. I’m a welder and not a diesel mechanic haha.
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Posted By: DrAllis
Date Posted: 29 Sep 2024 at 3:28pm
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On the side of the injection pump is a small rectangular cover with two slotted screws in it. Use a flat blade screwdriver and when it starts to act up loosen each screw a little until it begins to leak fuel and see if that straightens it out. You did remove the tanks outlet fitting and KNOW the fuel can gravity feed out of the tank easily ??
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Posted By: injpumpEd
Date Posted: 29 Sep 2024 at 4:27pm
you need to take the actual return fitting regulator out of top of pump, it's the 1/8" pipe thread hex piece that screws right into the pump top cover. That check ball is likely plugging up, or somewhere down the line is plugging up between there and the tank. Possibly left over debris from the last failure? The aftermarket kit flex rings seem to only last a year or 2 as well. Most of the big shops like to build in their future work lol! Ope! it's out of warranty. Hope not.
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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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