Farmall & IHC Tractors Discussion Board |
Re: Throttle While Cranking
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Bob M on February 24, 2005 at 17:40:54 from (69.201.120.79):
In Reply to: Throttle While Cranking posted by PAULIH300 on February 24, 2005 at 14:15:24:
Paul - That's pretty much normal. There's a couple reasons why. 1 - Unlike a carburetor on a car, your tractor's carb is pretty simple. Consequently it only has two "sweet spots" where it delivers the exact fuel/air the engine needs: At idle and at wide open throttle. Now if you crank the engine with the throttle open the carb tries to deliver the wide open mix. But the air flow thru the carb is so low at cranking speed the carb feeds little (or no) gas, and the engine behaves like it has no fuel. However setting the throttle at idle results in a fairly decent F/A mix and thus permits the engine to start. 2 - The lousy, overpriced gas the oil companies are now peddle doesn't burn worth a ^#@&!. Unless the F/A mix is close to ideal it's amazing an old tractor can be started at all. ---- Note also that different carbs/tractors behave differently. My Super H (same motor as your 300) is somewhat reluctant to start with the throttle wide open, especially when warm. But it lights right off with the throttle pushed in. And my Minnie Mo U absolutely WILL NOT start warm unless the throttle is set to dead slow. But the Super M starts no matter where the throttle is set, hot or cold. Go figure...
Follow Ups:
Home
| Forums
Today's Featured Article -
Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
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 HeadquartersWebsite Accessibility Policy |
|