Farm Equipment - Perkins problems

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Perkins problems

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=49746
Printed Date: 22 Aug 2025 at 9:42am
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Topic: Perkins problems

Posted By: Eldon (WA)
Subject: Perkins problems
Date Posted: 28 Apr 2012 at 8:52pm

Went to use the 175D with the supposedly "new" engine and "rebuilt" pump in it this afternoon and it started to miss and puff black smoke after it started up. I thought maybe if I worked it a little it would come out of it but it just got worse. I shut it down after about 10 minutes....any ideas of what is wrong? It ran great the last time I used it, but the engine did seem a bit noisey.

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Replies:

Posted By: MACK
Date Posted: 28 Apr 2012 at 10:08pm

Pull the injectors and have them tested. Could have a tip split or stuck. MACK

Posted By: JohnCO
Date Posted: 29 Apr 2012 at 12:52am

Bad fuel?

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"If at first you don't succeed, get a bigger hammer"
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Posted By: wi50
Date Posted: 29 Apr 2012 at 2:44am

I don't know how the intake pipe or tube connects the air filter and the manifold on one of these but if possiable take it off and run the engine for a bit to see what it acts like.

I've seen stupid things like mouse nests, shop rags, etc plugging an intake tract.

I don't know for sure but I'd think it's a CAV pump. Next check the pump timeing. I've worked on a few Perkins and they alwayse seam to be fussy on the timeing. It is possiable that the diesel shop timed the pump to the wrong spot on the ring to snap ring inside.

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