TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Tool Talk Discussion Forum

Carburetor Manual Choke Question

Welcome Guest, Log in or Register

Author

RoySC

04-24-2007 16:22:57

Report to Moderator

I'm having the following problem with a manual choke carb. The carburetor was recently rebuilt. When starting the engine, I pull out the manual choke control to close the choke plate on the carb, the engine starts up fine and runs good, the idle is a little high. After the engine is warm and I push in the manual choke control in to open the plate, the engine goes dead.
Does this sound like an idle adjustment problem to you? If yes, is the idle adjusted by a screw near the throttle control linkage?

Holley Carb on a 1989 F-700 truck with a 429 engine.

Thanks for your suggestions.

[Log in to Reply] [No Email]

sparepartsTN

04-25-2007 13:21:57

Report to Moderator

Re: Carburetor Manual Choke Question in reply to RoySC, 04-24-2007 16:22:57

Roy

Basics: When choke is on a cam increases idle speed to keep cold engine running. Both idle and main fuel systems supply fuel to get enough fuel to cylinders when cold. When choke is off idle speed returns to normal and fuel is supplied through idle venturi.

If you have a 2 or 4 bbl carb the idle screw is on the side of the fuel bowl where it mounts to the carb body, 1 screw for each bowl.

Initial idle setting, turn screw in gently until seated then back out 1 1/2 turns.

Sounds like running too lean: leak at intake manifold, blocked idle passages, blocked fuel bowl vent or bad PVC valve if there is one.

There is a metal tag on your carb with a "list number", that is your carb model. my email is open if you want more details.
Hope this long winded disertation helps. Warren

[Log in to Reply] [No Email]

Slowpoke

04-25-2007 01:26:11

Report to Moderator

Re: Carburetor Manual Choke Question in reply to RoySC, 04-24-2007 16:22:57

Was it professionaly rebuilt? If so take it back and have it bench tested again.
If you rebuilt it, go back over your work and check every detail again. Then take it to a rebuilder and have it bench tested. Last one I had tested was $40, 10 years ago. If that don't fix the problem, you have others. Good luck.

[Log in to Reply] [No Email]

circus

04-24-2007 21:48:06

Report to Moderator

Re: Carburetor Manual Choke Question in reply to RoySC, 04-24-2007 16:22:57

could be anything. The timing chain sent me on a wild goose chase.

[Log in to Reply] [No Email]

NE IA Dave

04-24-2007 20:29:34

Report to Moderator

Re: Carburetor Manual Choke Question in reply to RoySC, 04-24-2007 16:22:57

Intake manifold leak?

[Log in to Reply] [No Email]

BobOHIO

04-24-2007 16:57:43

Report to Moderator

Re: Carburetor Manual Choke Question in reply to RoySC, 04-24-2007 16:22:57

Roy it sounds like its not getting enough gas.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

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