Hey Dr Allis
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=19650
Printed Date: 08 Feb 2025 at 9:28am
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Topic: Hey Dr Allis
Posted By: Lonn
Subject: Hey Dr Allis
Date Posted: 19 Oct 2010 at 6:25am
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What would cause fuel to leak out the side of the injection pump on an L2 with 426? When I say leak I mean pour. Right at the advance piston plug. The o-ring or gasket is completely gone and fuel is everywhere. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Replies:
Posted By: injpumpEd
Date Posted: 19 Oct 2010 at 10:08am
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air leak in the suction side of fuel delivery system caused advance piston to rapidly occilate, thus pushing out the advance plug, probably taking housing threads with it. Sorry, I'm not Dr Allis, but thought I could assist as well. I'm sure Dr will have some input also, hopefully a not so costly solution! ------------- 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! |
Posted By: Lonn
Date Posted: 19 Oct 2010 at 11:18am
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Thanks Ed. Either you or the Dr or anyone who can help is appreciated. Thanks. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: skipwelte
Date Posted: 19 Oct 2010 at 11:27am
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Ive had the advance plug come loose, blow the oring and leak badly. Your lucky if its on the outside, the inside plug it tough to get tightened. If your gettin lots of air like Ed says its gonna be bad, nothing good ever comes from suction side air leakage, most times it will break the advance pin, then the eng is outta time and wont run. Hopefully it a loose plug. Good luck |
Posted By: injpumpEd
Date Posted: 19 Oct 2010 at 12:00pm
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If you cant find anyone close, I can fix it for you, but I'm in E. Peoria IL, you can ups it to me. good luck, Ed. ------------- 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! |
Posted By: Lonn
Date Posted: 19 Oct 2010 at 1:16pm
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Thanks guys. I took it off this morning. Looks like it may have been leaking on both sides. Don't have time to look any further. Had Dad take it to a local pump shop to check it out. Now I'm at work and I'm sure my hands smell like diesel still. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Lonn
Date Posted: 19 Oct 2010 at 6:16pm
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OK, rebuilder said the seals were hard and flat and he thought maybe someone had been running something like alcohol in the fuel. I don't know about that but it had been into before he could tell and the settings were off. He rebuilt the whole thing and I will put it on tomorrow. I did think it was a bit low on power while only running a 15' head. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Lonn
Date Posted: 22 Oct 2010 at 6:29am
I'll keep you in mind for next time. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
injpumpEd wrote: