Farm Equipment - C occasional miss

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C occasional miss

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=126489
Printed Date: 18 Jul 2025 at 6:09am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: C occasional miss

Posted By: Hubnut
Subject: C occasional miss
Date Posted: 28 Jul 2016 at 8:40pm

I have a beater C that is missing. It will run smoothly then "pop" like a miss. I can make it do it worse if I move the throttle to a faster setting quickly. Could this be a carburetor or valve problem? Timed by ear. Any help would be appreciated.

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1940 B "Lucy"
1941 B w/ Woods L59 "Flavia"
1942 B w/ finish mower "Dick"
1941 C w/ 3-point "Maggie"
1947 C SFW w/ L306 "Trixie"
1972 314H

Replies:

Posted By: DSeries4
Date Posted: 28 Jul 2016 at 9:07pm

Timed by ear - nope. Use a timing light.

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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080

Posted By: LeonR2013
Date Posted: 28 Jul 2016 at 9:10pm

Typical sound when timed to fast.