Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts

Community
Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
  
Farmall & IHC Tractors Discussion Forum
:

Farmall H Carb tuning after rebuild

Welcome Guest, Log in or Register
Author  [Modern View]
sammygunns1

09-13-2020 19:00:32




Report to Moderator

So Iíve finally gotten my H put back together enough to move around. She starts like a champ and will idle up fine, took it for a short ride around the yard and on the flat it runs good, but I noticed on an incline it starts to kinda choke out and hesitate a bit. Iíd assume this would be carb related? This is after a complete overhaul of the engine and head, havenít tuned the carb since long before this overhaul when I rebuilt the carb about 3 years ago. TIA for any help.

[Log in to Reply]   [No Email]
pete 23

09-14-2020 13:45:34




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to sammygunns1, 09-13-2020 19:00:32  
First off, there is no such thing as a standard setting on those carburetors. Initial settings are suggested to just get it up and running before you can make a better more accurate adjustment although it may work fine on factory initial adjustment.

You might want to turn the main jet adjustment in all the way until it bottoms while counting the turns just for the record. Then back it out to where you originally had it.

Then start engine and allow it to warm up at moderate speed for a while. Now, pull throttle to full rpms which should be right close to 1800 rpm's. Turn main jet needle in until engine slows or starts to stumble. Then turn it out until it runs smooth and give it another half turn out.

If it smokes black after doing that, you have carburetor problems. Dirty, oversized main jet, fluel level too high etc.

Now adjust low idle speed and air mixture. The air mix should adjust up from half turn out to maybe two turns. If not, carb problems.

If it still stumbles under load, you make sure you have full fuel flow out the bottom drain plug on carburetor. Let it drain for a minute or so to make sure good supply continues.

Don't over look ign timing. Top dead center static timing (meaning engine not running) and then check advance of spark when running at full throttle. . Should be 40 degrees factory battery ignition, 30 degrees with flat head over size (3 7/16) pistons is best but 40 works ok for most, or 22 degrees with fire crater style dome piston all considering gasoline head.

If magneto, impulse snaps just a degree or two up to five degrees after top dead center and close to 35 degree advance of spark at all engine speeds

[Log in to Reply]  [No Email]
rustyfarmall

09-14-2020 06:28:49




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to sammygunns1, 09-13-2020 19:00:32  
Quoting Removed, click Modern View to see

The factory initial setting on the high speed idle is 3 turns out. That is where I have set ALL of mine, and never needed to touch it again.



[Log in to Reply]  [No Email]
thdrduck

09-14-2020 06:02:06




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to sammygunns1, 09-13-2020 19:00:32  
Try turning the high speed mixture screw out 1/4 turn and see if that helps. Could be it's just running a tad lean. If that doesn't help, you can always put it back where it was. Nothing lost.



[Log in to Reply]  [No Email]
Dave41A

09-13-2020 19:18:31




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to sammygunns1, 09-13-2020 19:00:32  
By "choke out" do you mean black smoke? It may very well be that the carb just needs to be tuned to match the new engine. But it is also possible that something got in there while it was off the tractor and plugged something. This is also assuming the governor is adjusted properly. What kind of ignition? Is the gas fresh? Please provide more information.



[Log in to Reply]  [No Email]
sammygunns1

09-14-2020 06:03:55




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to Dave41A, 09-13-2020 19:18:31  
No black smoke or anything. Just kinda bucks a little bit like itís starving for fuel.



[Log in to Reply]  [No Email]
Dave41A

09-15-2020 11:02:02




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to sammygunns1, 09-14-2020 06:03:55  
Could also be missing if something is loose on the ignition side, or timed wrong. You might not notice the problem until you were on the slope and the engine loaded a bit. If it bucks that seems more like ignition than starving for gas, but I'm not there to see it. Does it slow down and then come right back up on its own? Or does it just slowly lose RPM when under load, like it is trying to pull too heavy a load? The first is more likely ignition; the second is more likely carburetor. But even something as simple as a sticky float could cause the first. What kind of ignition?

[Log in to Reply]  [No Email]
rustred

09-13-2020 19:10:46




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to sammygunns1, 09-13-2020 19:00:32  
that is just not right! an engine rebuild and not the carb. plus did not even adjust it, get her soaking in the gunk.



[Log in to Reply]  [No Email]
used red mn

09-14-2020 10:13:30




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to rustred, 09-13-2020 19:10:46  
I donít think that a carb rebuild is required for an overhaul. Sometimes you can mess up more stuff by opening it up then if you just leave well enough alone. Just my opinion.



[Log in to Reply]  [No Email]
rustred

09-15-2020 06:51:55




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to used red mn, 09-14-2020 10:13:30  
well its kina a standard procedure ,as you dont want a flooding carburator on a fresh overhaul washing the cy's down.



[Log in to Reply]  [No Email]
sammygunns1

09-14-2020 11:09:42




Report to Moderator
 Re: Farmall H Carb tuning after rebuild in reply to used red mn, 09-14-2020 10:13:30  
You think it just needs adjusted to the fresh engine? We rebuilt the carb a couple years ago and it hasnít given us any issues prior to this overhaul.



[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 © 1997-2020 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