Farm Equipment - Allis B (1950) runs only on full choke

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Allis B (1950) runs only on full choke

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=55525
Printed Date: 09 Sep 2025 at 1:04pm
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Topic: Allis B (1950) runs only on full choke

Posted By: technician
Subject: Allis B (1950) runs only on full choke
Date Posted: 19 Aug 2012 at 7:01pm

Allis B runs only on full choke. I've re-built the carbeurator, checked fuel lines. The exhaust manifold has about a quarter inch hole. Could that be the problem?

Thank you for any help.

Replies:

Posted By: CTuckerNWIL
Date Posted: 19 Aug 2012 at 7:06pm

Yea, if there is any opening from the exhaust side to the intake, it won't suck gas through the carb very well.

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http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF

Posted By: technician
Date Posted: 19 Aug 2012 at 7:27pm

Can the exhaust manifold be repaired or need to replace it?

Posted By: Charlie175
Date Posted: 19 Aug 2012 at 7:32pm

Due to the expansion/contraction of the manifold due to heat, any fixes that I have seen usually crack

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Posted By: technician
Date Posted: 19 Aug 2012 at 7:44pm

Thank you