6080 injector replacement now won’t start?
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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=154137
Printed Date: 14 Jul 2025 at 9:40pm
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Topic: 6080 injector replacement now won’t start?
Posted By: rudyk
Subject: 6080 injector replacement now won’t start?
Date Posted: 19 Sep 2018 at 8:00pm
I Had the injectors rebuilt on 6080, now won’t start.
I cracked the lines to injectors and had fuel running out, tightened them back up and still nothing.
While it’s turning over I am getting some exhaust. Any tricks or suggestions.
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Replies:
Posted By: AC720Man
Date Posted: 19 Sep 2018 at 8:14pm
Couple of unknowns, did you just pull the injectors to have rebuilt or did you also replace the fuel filter? Pump may need to be bled also. Bleeding them works best if you have someone in the operator seat turning it over as you operate the wrench. I always have the injector nut tightened on each injector and bleed each line one at a time.
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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD
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Posted By: rudyk
Date Posted: 19 Sep 2018 at 8:26pm
I had the pump rebuilt by injection pump ed a couple months ago, he did a great job.
I will try bleeding the pump
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Posted By: MACK
Date Posted: 19 Sep 2018 at 10:14pm
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Do the lines from pump go in top or side of injectors? I would loosen all 4 lines at injectors and crank until all run clear fuel, then retighten. MACK
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Posted By: troym
Date Posted: 20 Sep 2018 at 7:19am
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While it is rare i have seen where when bumping up the pressure on the injector when rebuilt. may cause it to be to high for the pump to open the needle, ask the guy who rebuilt them if he raised the opening pressure that will help troubleshoot, it could be that your injection pump cant quite open the needle do to age of pump. just my experience.
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Posted By: injpumpEd
Date Posted: 20 Sep 2018 at 7:41am
My guess is the guy set them so high, it won't pop them now. Not sure who did these for you, but it sounds like a bad deal all around. This tractor has AC injectors in it. It's the first time I've seen a 6080 with AC injectors. I have always seen American Bosch, or Robert Bosch injectors in them.
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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: DrAllis
Date Posted: 20 Sep 2018 at 7:51am
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The oldest 6060/6080's never had A-C injectors in them. Always one of the Bosch Brothers injectors.
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Posted By: injpumpEd
Date Posted: 20 Sep 2018 at 8:18am
So someone has swapped engine in this tractor, or something. He texted me a pic of it, and lines look factory, but indeed come in the side, and return is on the top. It had a correct 6080 pump though, DB2437-3837.
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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: 20 Sep 2018 at 10:44am
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the plot thickens....got an early combine engine? I think my 78 F2 had AC injectors but I'd have to look.
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Posted By: injpumpEd
Date Posted: 20 Sep 2018 at 11:10am
F2 shows AC injectors for early ones.
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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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