Posted by Steve@Advance on December 22, 2018 at 07:45:02 from (66.169.147.211):
In Reply to: Re: Petrol problems... posted by Russ from MN on December 22, 2018 at 07:01:26:
Russ, not necessarily so...
If you look at a flow circuit diagram of a carb, you'll see that there is a bowl vent tube that extends out beyond the choke plate. What that tube does is equalize the atmospheric pressure on the fuel in the bowl with the pressure inside the air filter.
Closing the choke reduces the air flow behind the plate but leaves the vent open, therefore causing the intake vacuum to draw directly from the main jet, giving a full rich mixture.
Once the choke is opened, the pressures equalize and the carb returns to normal idle mix/ventura draw regardless of the air filter restriction, up to a point...
If the air filter becomes so clogged it can't move enough air across the ventura, then the siphon effect is reduced to the point little fuel can be drawn up from the bowl.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 ]
Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
... [Read Article]
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.
