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

Ford 9N, 2N & 8N Discussion Forum
:

intermitant miss under load

Welcome Guest, Log in or Register
Author 
Tn. Jed

04-14-2007 18:42:05




Report to Moderator

so this is my story: I own a 49 8n with a recently rebuilt engine, 12v frnt mnt. conversion 12v coil new ignition switch wire harnes points cap rotor manifold plugs wires andit runs great, had it out fer a few hours with the brush hog mowin the feild with no problem plenty o power no miss, had it out with the disk couldn't even tell it was back thair even with added weight on the disk so the other day I hooked the grader blade up to go onto the lower land and clear some debree first have to fix the steep hill\road going down thair i get about half way down pick up the blade and try to back up the steep hill engine starts missing when I let out the clutch was able to get up the hill but had to push in clutch and let engine catch up than go at it again. F.Y.I not related but got the 8n stuck on the hill in a ditch eroded away by rain, had t pull er out with the 81 caddy!!! sorry bout the long read hope I gave youall the info nedded any help appretiated

[Log in to Reply]   [No Email]
Dell (WA)

04-14-2007 20:25:43




Report to Moderator
 Re: intermitant miss under load in reply to Tn. Jed, 04-14-2007 18:42:05  
Jed..... ..you just replaced yer frontmount points, ran good, now it don't?..... ..check yer points gap AGAIN. The short #8-32x3/16 points screw gitts INVISIBLE WEAR and won't hold the gap. (0.015) New SHORT screw $50c (cheap) you can also gitt'em from your local Ford Automobile parts store. Isn't that amazing?..... ...Dell, yer self-appointed sparkie-meister



[Log in to Reply]  [No Email]
Jerry/MT

04-14-2007 20:17:37




Report to Moderator
 Re: intermitant miss under load in reply to Tn. Jed, 04-14-2007 18:42:05  
How much fuel did you have in the tank and how steep was the hill? A properly running engine means that it has fuel & air in the right proportion, and spark at the right time. It doesn't know forward from backward. I wonder if you had a low level of fuel in the tank and uncovered the fuel supply tube when you backed uphill, reducing the fuel supply? Or the other possibility is a hung float in the carb. It didn't happen going down hill becuase the throttle plate was probably near closed and you were at min fuel flow. It happens backing up hill because you were at high part throttle and fuel supply was restricted.

That's my best guess IF you have a good spark, which you imply based on the disking and hoggin' you did previously.

[Log in to Reply]  [No Email]
Tn. Jed

04-14-2007 22:44:06




Report to Moderator
 Re: intermitant miss under load in reply to Jerry/MT, 04-14-2007 20:17:37  
thanks fer the advice I will check my points gap but I bet it was the fuel considerin that when my tank is low on level ground with gas line disconected from carb fuel kinda surges then trickels then surges then trickels on and on. been a little afraid to mes with sediment bowl considerin since ive owned the tractor it's had sum sorta gum or putty around the threads goin into the tank that the previous owner musta fixed a leak with I'ma get a new one this week puter in and check the points and spark intensity seems like the right thing to do, again thanks

[Log in to Reply]  [No Email]
Jerry/MT

04-15-2007 11:50:20




Report to Moderator
 Re: intermitant miss under load in reply to Tn. Jed, 04-14-2007 22:44:06  
These old tractors sat in the back forty covered with blackberry bushes for years before someone resucitated them and all manner of crap and corruption is found in the fuel tanks. Don't be afraid of pulling the sedment bowl and cleaning out the tank unless you like poor running. It sounds like you have a restriced fuel supply based on your follow up post so get that fixed because some of that crap and corruption will end up in your carb and make a mess in there if it hasn't allready.

[Log in to Reply]  [No Email]
A. Bohemian

04-15-2007 08:52:44




Report to Moderator
 The Sediment Bowl is your Friend! in reply to Tn. Jed, 04-14-2007 22:44:06  
Dell is right, more often than not; this may well be a spark problem; but I ALSO note:

"been a little afraid to mes with sediment bowl considerin since ive owned the tractor it's had sum sorta gum or putty around the threads goin into the tank that the previous owner musta fixed a leak with"

Get a gasket; you'll need one.

Now, pull the sediment bowl. Pour out the contents carefully (and remember, if you like fishing, please dispose of old gasoline responsibly), and catch the sediment in the bottom of the bowl.

See any fine particles of rust? Then the tank will have to be replaced or cleaned and perhaps sealed before it will run reliably.

No rust but other gunk? You still need to have the tank cleaned out.

But I will say the suging when low sounds to me very like relatively large flakes of rust in the tank, which tend to shift and swirl slowly over the outlet of a tank as the fuel runs out.

Finally, note that fixing a rusty tank doesn't do anything about the rust that's been going through the system all these years; you may still need to clean the screens, etc.

There's no absolutely avoiding this problem; but keeping the tractor indoors when not in use helps considerably.

[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