(800) 853-2651
SHOP NOW

544 gas missing on cylinders 1 and 2, until choked

P

primerk5

Member
I'm going to be working on a 544 gas and the tractor is only hitting on cylinders 3 and 4 most of the time. If I pull the choke some the rpm will pick up a little. If I pull the choke out almost all the way the first two cylinders will start to pick up and it begins to sound good. Then it will start to smoke like its rich. It will smoke worse and the rpm will start to drop. Cylinders 1 and 2 spark plugs are blackened, while 3 and 4 are white looking.

Any thoughts on where to start? This seems strange that I need to choke it to get all the cylinders to fire.

Thanks
 
I would first try to find a air leak in the intake manifold. Check the tightness of the bolts retaining the manifold to head.
Look for cracks. Use a propane torch (unlit) to check for intake leaks. Direct the propane fumes to the manifold flange and see if the RPM picks up.
Swap the front two plugs with the rear two (or replace them with new) to see if bad plugs could cause it. Jim
 
First check for correct wiring, two crossed wires will act like that, then check everything else listed.
 
Thanks for your guys thoughts, I was thinking possibly manifold gasket or crack. I will check compression first though.
 
I would change 1@2 with 3@4 plugs then wires you have fire or it wouldnt run so you either have two bad plugs or wires then compression check then tappet clearence. But your dist is OK or 3@4 wouldnt fire. Are you sure the wires are in the correct order as your firing is 1342. Those engines will run on tw cycle if the right cycls are firing.
 
I checked the firing order the other day and wires appeared in the correct, I will check again though. Would it really start to run right with the plug wires out of order, just by pulling the choke?
 
You must log in or register to reply here.

Similar threads

B
8N Won't Start
2 3
Replies
43
Views
1K
soaked
S
P
WD9 no fuel to Cylinders 1 and 3
Replies
15
Views
972
primerk5
P
D
Case VAC Starting Issue
Replies
2
Views
237
Tgrasher
Tgrasher
M
D-17 gas series I stalling
Replies
4
Views
382
old
O
H
Bad miss
Replies
13
Views
571
rustred
rustred
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