Farm Equipment - Help, 8030 sounds like a JD!

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Help, 8030 sounds like a JD!

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=12055
Printed Date: 30 Jan 2025 at 6:21pm
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Topic: Help, 8030 sounds like a JD!

Posted By: Jordan(OH)
Subject: Help, 8030 sounds like a JD!
Date Posted: 06 May 2010 at 9:03pm

We have an 8030 with a rebuilt engine, head and injectors. After about 3hrs. of use I noticed there is a popping sound out of the exhaust, sounds just like a 2 cyl. JD is parked next to it. Any ideas what this would be? Injection pump was not touched.

Replies:

Posted By: Amos
Date Posted: 06 May 2010 at 9:19pm

Exhaust valve broke....stuck open maybe......exhaust gasket blown out on one cylinder....would almost have to stand beside it when it is running for me to tell. I am no expert. Maybe an injector has blown out.

Posted By: DrAllis
Date Posted: 06 May 2010 at 9:32pm

Pull the valve cover....push rod jumped out of place....adjuster screw backed out..etc..may not be serious.

Posted By: Wes (VA)
Date Posted: 06 May 2010 at 9:44pm

Not an exhaust leak is it? feel any air coming out of the manifold in places that its not supposed to??

Posted By: Jordan(OH)
Date Posted: 06 May 2010 at 10:25pm

Not exhaust leak, noise is coming out the stack.

Posted By: Eugene
Date Posted: 07 May 2010 at 6:02pm

Could be a bad injector. I have had that before after getting nozzles done. Kept ruining the nozzle on the same injector. I ended up replacing the complete injector and have had no trouble since. My tractor was making a horrible popping noise , but would also blow a lot of smoke that would burn your eyes like onions.

Crack the injectors one by one and isolate the bad cylinder. Remove the injector and get it tested. Or move it to another posiiton and see if the problem goes to another cylinder. Eugene