Farm Equipment - 8070 compression

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8070 compression

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=56077
Printed Date: 08 Sep 2025 at 6:46pm
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Topic: 8070 compression

Posted By: Cody nwo
Subject: 8070 compression
Date Posted: 29 Aug 2012 at 9:36pm

What's the compression range on a healthy 8070 supposed to be?

Replies:

Posted By: DrAllis
Date Posted: 29 Aug 2012 at 9:44pm

With all six injectors removed and a battery charger on healthy batteries and a healthy starter, I'd expect 350 to 375 psi....Remember, regardless of what your tester says, they should be close together, like within 20-25 pounds.

Posted By: Cody nwo
Date Posted: 29 Aug 2012 at 9:51pm

Thanks Doc, we pulled the injectors today to have them checked because we're losing power and noticed what looks like aluminum on the tip of number 5 injector. I'm hoping it's not gona be more serious than I thought