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

John Deere Tractors Discussion Forum
:

ponyexpress needed

Welcome Guest, Log in or Register
Author 
John Moore

06-18-2004 14:16:29




Report to Moderator

Just got my 1st TWO CYLINDER. A "56 JD 80 DIESEL, srl#8001646. Tractor sold new with a cab. Big motor runs great no smoke or knocks. However the ponymotor is not so good, idle's like new, cuts out when I give'er the gas. Cleaned carb, and adjusted according to service manual, still wont run much past idle. Any and all info would be greatly appreaciated. THANK's John




[Log in to Reply]   [No Email]
John Moore

06-21-2004 18:03:36




Report to Moderator
 Re: ponyexpress needed in reply to John Moore, 06-18-2004 14:16:29  
When I say idle, that's just what it is. With the throttle in the start (idle) position she runs as smooth as silk but only at about 800-1000 Rpm's. When I advance the throttle she picks up speed up to around 2500-3000 Rpm then cuts out. She won't even think of spinning the BIG'EN (the DIESEL) when decompressed much less try to fire it. However,on a good note "I think", might have found at least part of the problem. I checked the distributer and she smells burnt also one coil is leaking. Any idea on where to get replacement's? THANKS.JOHN

[Log in to Reply]  [No Email]
Soldier Tom

06-24-2004 19:12:30




Report to Moderator
 Re: Re: ponyexpress needed in reply to John Moore, 06-21-2004 18:03:36  
I had much the same experiance on the old 720d. Unfortunately MY problem was that the pony had ingested TWO CYLINDERS and only running on the two it had'nt eaten. It would sometimes even start the D'sel like that after it spun up a head of steam, and if the planets had aligned just right on the full moon. That crazy little thing wouldn't quit tho. Maybe 2 or 3 spins of the d'sel at a time was all it was good for and then if I got the fuel turned on just at the right time it would STILL start the bigun. Amazing little motor. I ended up replacing the pony with another one that was already gone through and rebuilt. Hopefully that isn't your lot, tho. I still love a pony start tractor.
~Walk in peace~

[Log in to Reply]  [No Email]
Soldier Tom

06-19-2004 08:05:23




Report to Moderator
 Re: ponyexpress needed in reply to John Moore, 06-18-2004 14:16:29  
Ya Know, there isn't much difference in the idle and the operation speeds of the ponys. Hard to distinguish without calibrated ears (is it FOUR 1/2 thousand RPMs or is that FIVE thousand RPMs I am hearing?) Get you a hand held tach and get a TRUE idea what is going on. If it's running strong and spinning the big motor on full compression, you may have a false idea how the little motor is "supposed" to sound.
~Walk in peace~

[Log in to Reply]  [No Email]
720Deere

06-18-2004 19:08:49




Report to Moderator
 Re: ponyexpress needed in reply to John Moore, 06-18-2004 14:16:29  
I had the same problem with an 80 pony motor recently. Our problem was one bad or weak coil. Take the cover off of the distributor and give the coils the old "Clooney sniff test". If they appear to be leaking or have a burnt smell, that's your problem. The carb is also very sensitive on those motors and fresh gas is an absolute must.



[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