Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Discussion Forum
:

Farmall H running rough

Welcome Guest, Log in or Register
Author 
glen emery

09-06-2001 13:27:32




Report to Moderator

I have a '46 Farmall H. It misses and runs rough. I've had the Magneto overhauled, and am getting good spark, I've put in a carburetor kit, new plugs, new copper core plug wires, and adjusted the valves. It's not burning any oil. It starts good. When idling it pops and misses, when you rev it up, it pops, misses and shakes. With a load on it, it evens out but doesn't have much power. Anybody got any suggestions? What do I try next?

[Log in to Reply]   [No Email]
Jim

09-07-2001 09:01:50




Report to Moderator
 Re: Farmall H running rough in reply to glen emery, 09-06-2001 13:27:32  
As Mr. Soldan made the point of sucking air in the manifold, if you pull the choke out does it smooth out ? This is the first step before using the gas, I think.



[Log in to Reply]  [No Email]
cornfused

09-06-2001 17:44:24




Report to Moderator
 Re: Farmall H running rough in reply to glen emery, 09-06-2001 13:27:32  
At risk of insulting you, check the firing order. When changing wires it is easy to get one wrong.



[Log in to Reply]  [No Email]
glen emery

09-06-2001 23:22:09




Report to Moderator
 Re: Re: Farmall H running rough in reply to cornfused, 09-06-2001 17:44:24  
firing order is right, i did think of that.



[Log in to Reply]  [No Email]
michael Soldan

09-06-2001 16:03:22




Report to Moderator
 Re: Farmall H running rough in reply to glen emery, 09-06-2001 13:27:32  
Glen, two things come to mind to check out for the way you describe your H's behavior. The carb could be putting too much fuel into the system on the low idle..this would explain why it seems fine under load at higher speed. The second thing is to check and make sure the manifold isn't sucking in air. This is easy to test with an acetylene torch or a propane torch...let the tractor run at the speed it seems to sputter and miss at..turn the propane or acetylene on and run the nozzle of the torch around your manifold...if it smooths out when you get close with the gas then its sucking air and you have a bad gasket or a crack in your manifold..which will cause the symptoms you have described....I have an H that has done the same thing and even though the carb has been rebuilt it needs to be looked at again for low speed idle...good luck from Mike in Exeter Ontario.

[Log in to Reply]  [No Email]
glen emery

09-06-2001 23:26:50




Report to Moderator
 Re: Re: Farmall H running rough in reply to michael Soldan, 09-06-2001 16:03:22  
thanks, I'll try checking the manifold. I hadn't thought of that. One other person said I might be getting too much gas. I've checked the float, and replaced the needle and seat, when I rebuilt the carb.



[Log in to Reply]  [No Email]
Redtractorman

09-06-2001 13:31:58




Report to Moderator
 Re: Farmall H running rough in reply to glen emery, 09-06-2001 13:27:32  
Try loosening the bolts on the mag and turning one way or the other it may be out of time a little,when you took mag apart did you get the little plastic gear timed right.



[Log in to Reply]  [No Email]
glen emery

09-06-2001 23:24:35




Report to Moderator
 Re: Re: Farmall H running rough in reply to Redtractorman, 09-06-2001 13:31:58  
yep, mag is timed right. I had to take it to a mag shop to have that set. advancing and retarding the timing makes some difference but not enough.



[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy