(800) 853-2651
SHOP NOW

504 IH runs very rough

B

bigdieselman

New User
Im working on my neighbors IH 504 utility tractor, hes been sick for 3 years, getting better ask me to get it running. did a complete tune up new plugs points condenser coil, adjusted the valves, cleaned the carburator but it still runs very rough, back fires, smokes wants to die out. I done all I could except pulling the head, I need advice thank you
 
I'd start by putting the old condenser back in. Next I would make sure the firing order is right. since I know it is not the common 1,2,4,3. IH uses the 1,3,4,2
 
Was it running bad before the tune up?

After market ignition parts are known for being bad or wrong straight out of the box.

Carefully retrace all components of the ignition, especially the points and condenser, the distributor condition, and spark condition at each plug. Exhaust backfire is a sign of intermittent loss of spark, bad points,loose connection, bad ignition switch.

Do you have a vacuum gauge? Try checking the vacuum and look at the troubleshooting guide that comes with it.

I?m thinking that has a Siamese manifold, which can burn through between the intake and the exhaust. That will act like a bad vacuum leak.

The other thing that comes to mind is dry valve guides, causing slow valve closing, sticking at speed.
 
Had a very similar problem, in a similar IH engine. The distributor rotor shaft notch had chipped away where the rotor button pushed on. Allowed the rotor button to rotate a few degrees away from the points timing. Ran like crap. One thing you can easily check.
 
If you by some chance had the distributor out I am going to guess it is out of time by a 180 degrees. If it ran good before the work. Or the plug wires are not on in correct location/order.
 
You must log in or register to reply here.

Similar threads

M
Running Rough and I'm out of Ideas
Replies
17
Views
1K
Mnethercutt
M
R
Fltwheel for IH 504
Replies
7
Views
1K
Janicholson
Janicholson
C
460 utility pooping out when warm
Replies
10
Views
1K
504
5
R
504 diesel want start from starter
Replies
11
Views
551
buickanddeere
B
L
Ford 860 questions and choke plate
2
Replies
22
Views
2K
JMOR
J
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.

Copyright © 1997-2024 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

Back
Top