O-C carburetor woes
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=209416
Printed Date: 19 Dec 2025 at 8:23pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: O-C carburetor woes
Posted By: Michael V (NM)
Subject: O-C carburetor woes
Date Posted: 18 Dec 2025 at 10:23pm
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Workin on a M/S TXS #67(IIRC) on a Moline U, I put in a new needle and seat,, set the float at 1/4" like the structions say,,well,, floods really bad..runs, but lotsa black smoke,gas running out of the ai cleaner inlet.. Well, change back to the 'old' needle an seat,it runs really good,no 'flood' kind of exhaust smoke, it even sounds better,, no gas running out,, but hafta run about 1/2 choke to run at hi idle....☹️  tell me not gettin enough fuel..I do have good flow with the bowl plug removed.  Jus venting mostly,, I'll figure it out...😡 The one on the rear of the trailer is the culprit..  |
Replies:
Posted By: SteveM C/IL
Date Posted: 18 Dec 2025 at 10:30pm
| Let us know what you come up with. |
Posted By: Michael V (NM)
Date Posted: 19 Dec 2025 at 10:54am
yea,, I was venting,,, but ,, well,,,suggestions be welcome...
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Posted By: steve(ill)
Date Posted: 19 Dec 2025 at 12:49pm
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if your running with the choke 1/2 on, then the main jet is plugged... need to pull out the jets, rod out the holes, blow out with air, etc..
this assumes the intake manifold gasket is not cracked and your sucking in excess air.. ------------- Like them all, but love the "B"s. |