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

Tractor Talk Discussion Forum

carburetor

Welcome Guest, Log in or Register
Author 
Donald Topham

06-19-2007 14:00:27




Report to Moderator

I have a 1957 John Deere 520..can not get gas to go into clys. bowel fills ok from tank..spark plugs remain dry..tractor's in time and, good spark..
any one have any ideas? carburetor has new gaskets and, float set ...everything checks..but can not get it to start..




[Log in to Reply]   [No Email]
Jrry

06-20-2007 14:38:02




Report to Moderator
 Re: carburetor in reply to Donald Topham, 06-19-2007 14:00:27  
Donald, I was having a similar problem on my Ford 961. After trying everything else I put a rebuilt carb on and it cranked right up. I think something was stopped up in the carb on my tractor.



[Log in to Reply]  [No Email]
trucker 40g

06-19-2007 20:25:33




Report to Moderator
 Re: carburetor in reply to Donald Topham, 06-19-2007 14:00:27  
Well,I dont know anything about a John Deere like you have,but I think I would look at the gaskets and see if they matched.Maybe try cranking it over a little with my hand over the air intake to see if it is even drawing air in the motor.Most likely its something with that carburetor,maybe the air mixture or maybe the float is stuck in the up position,line plugged past the sediment bowl.Try cranking with your hand over the intake,maybe wrap your hand with a rag first,and see if it is drawing air through the carburetor.

[Log in to Reply]  [No Email]
gene bender

06-19-2007 16:42:30




Report to Moderator
 Re: carburetor in reply to Donald Topham, 06-19-2007 14:00:27  
isnt there a valve that is operated by vacuum to open the flow from the fuel tank to the carb? If you take the line off at the carb and turn engine over there should be gas flowing



[Log in to Reply]  [No Email]
buickanddeere

06-19-2007 18:12:29




Report to Moderator
 Re: carburetor in reply to gene bender, 06-19-2007 16:42:30  
Engine oil pressure opens the valve in the sediment bowl. It wouldn't be the fist time either somebody spun the knurled nut down and clamped the valve shut. Or 50 plus years of rust & dirt plugged the sediment bowl screen. There is a filter in the carb too. I assume by bowl you mean the sediment bowl's sight glass? Is there any gasoline flow from the carb bowl drain valve if you hold the sediment bowl valve stem down? As for rebuilding the two cylinder carb? It takes a seasoned pro or a carefull person reading detailed instructions while using the proper tools. There are many tiny passages, hidden fuel ports etc. The float has to be set spot on too. Even a seaping carb bowl gasket will cause poor running. The carb bowl is referenced to the intake manifold pressure, not to atmosphere.

[Log in to Reply]  [No Email]
glennster

06-19-2007 14:15:08




Report to Moderator
 Re: carburetor in reply to Donald Topham, 06-19-2007 14:00:27  
have you checked compression? pull a plug and put your finger in the spark plug hole and turn the motor over, on the compression stroke it should pop your finger out of the hole. maybe put a couple squirts of oil on each cylinder and turn it over a few times, then put spark plugs back in, give er a quick shot of ether or carb cleaner and see if she pops. could be the valves arent seating, maybe the rings are dry and it wont pull fuel from the carb.

[Log in to Reply]  [No Email]
Donald Topham

06-19-2007 17:05:55




Report to Moderator
 Re: carburetor in reply to glennster, 06-19-2007 14:15:08  
Thanks guys..I've tried all the things you told me about..and, this is why I deceided to ask on line...
compression is 18 p.s.i. under the recommened 146 p.s.i. so that's not the problem. tractor run perfect before. so I'm stumped...



[Log in to Reply]  [No Email]
trucker 40

06-19-2007 14:09:33




Report to Moderator
 Re: carburetor in reply to Donald Topham, 06-19-2007 14:00:27  
Do you think the intake might be plugged with something?Bout all I can think of.



[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