Farm Equipment - 8070 problem

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8070 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=19766
Printed Date: 08 Feb 2025 at 5:21pm
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Topic: 8070 problem

Posted By: Slaughter
Subject: 8070 problem
Date Posted: 21 Oct 2010 at 8:08pm

I have a 8070 with 5000 hrs on it. I haave been using it on the grain cart this fall . All fall it has been plutting out a lot of smoke and has lost power. It has a new turbo and the pump and injectors rebuilt in the last year. Starts good but has no low end power Any help would be helpful.

Replies:

Posted By: Troy
Date Posted: 21 Oct 2010 at 9:14pm

if it is black smoke it is not getting enough air check for a boost pressure leak at manifold or crossover tube, do you here a whistle at all? also check for restricted air flow maybe air cleaner . if it is white smoke it is unburned fuel as maybe injector tip blown off or timing or anything to do with low compression on a cylinder, what color is the smoke?

Posted By: DSeries4
Date Posted: 21 Oct 2010 at 9:14pm

Is the air filter clean?

Posted By: DrAllis
Date Posted: 21 Oct 2010 at 9:46pm

Blown intake gasket between the intercooler and the cylinder head....fails just above the starter usually.

Posted By: ACB110
Date Posted: 28 Oct 2010 at 9:45pm

Just replaced our fuel injector pump on our 8070 the advance/retard timing mech. went bad only 1700 hrs. on it.

Posted By: injpumpEd
Date Posted: 29 Oct 2010 at 6:34am

As Dr says, or check for any plugs in manifold that may have fallen out. Have seen this several times. Put a boost gauge in the manifold and check it. This tractor sounds like it isn't getting boost. Then you need to find out where it is escaping to. good luck, Ed.

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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!