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Uh oh what did I do to my D17 gasser?

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=188698
Printed Date: 20 Sep 2025 at 5:54pm
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Topic: Uh oh what did I do to my D17 gasser?
Posted By: TomYaz
Subject: Uh oh what did I do to my D17 gasser?
Date Posted: 05 Jun 2022 at 7:40pm
So I was brush hogging when I went under a branch and creased the muffler.  Of course the restricted exahust caused rough running so I parked it and got a new muffler.

So I am cutting today and it sputters a bit when if goes thru some tough spots....hmmm...not normal...but otherwise running fine.

Then I run over a rough patch that, actually a mound of dirt that casues the whole unit to konk out...OUCH!  been a while since I did that!  So I fired it back up and  now it sputters and farts 100% of the time....Seems to me I must of hosed something when I was running it a bit with restricted exhaust...yes other than me giving the tractor abuse, what you think is the problem?



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If its not an All-Crop, it all crap!



Replies:
Posted By: DiyDave
Date Posted: 05 Jun 2022 at 8:15pm
Inspect the manifold to see if you cracked it, or moved it.  Could be a leaky intake gasket, or pulled a stud out...

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Posted By: steve(ill)
Date Posted: 05 Jun 2022 at 8:15pm
If you hit it hard enough to bend the muffler, you might look at the manifold and see if it cracked and is sucking air somewhere ?

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Posted By: TomYaz
Date Posted: 06 Jun 2022 at 5:16am
Thanks fellas, will do!

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If its not an All-Crop, it all crap!


Posted By: TomYaz
Date Posted: 07 Jun 2022 at 6:03am
Well guys looked at the manifold.  Everything looks good.  The manifold was put on when I refurbed the unit about 15 yrs ago so it is solid.  So it may be a seal leak....any trick on how to figure that out?  Would issue be caused by intake, or outake, both?

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If its not an All-Crop, it all crap!


Posted By: jvin248
Date Posted: 07 Jun 2022 at 5:10pm
Originally posted by TomYaz TomYaz wrote:

Well guys looked at the manifold.  Everything looks good.  The manifold was put on when I refurbed the unit about 15 yrs ago so it is solid.  So it may be a seal leak....any trick on how to figure that out?  Would issue be caused by intake, or outake, both?


Carb cleaner sprayed near a vacuum leak (air intake region) will make the engine bog down.

I bought a used but not terribly abused '52 WD last December and it had exhaust and I suspected intake leaks too. The muffler was rusted bad, poor fitment to the manifold. Since I was going to have to fight with rusted manifold nuts to put seals to the block, I ordered a new manifold (WD45 version, possible the same as the D17 has?) and the kit came with the new seals, plus I ordered the matching muffler. Engine runs a lot better now, and of course much more quietly.

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Posted By: 1951WDNWWI
Date Posted: 07 Jun 2022 at 5:25pm
Mine looked good on a 1951 WD. After always having to adjust the carb all the time I discovered the manifold was eroded and tappered from years of use. New manifold and manifold gaskets solved the problem.


Posted By: TomYaz
Date Posted: 08 Jun 2022 at 6:18am


>>Carb cleaner sprayed near a vacuum leak (air intake region) will make the engine bog down.

Thanks for the tip. Hope I can tell a difference cause it sputters and backfires at all times.


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If its not an All-Crop, it all crap!



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