Posted by Tom Arnold on November 03, 2013 at 16:09:37 from (174.91.92.248):
In Reply to: Smoke posted by Bob S. on November 03, 2013 at 15:27:18:
When you spin an engine over to start it up, the piston tries to suck an air/fuel mixture into the combustion chamber for the spark plug to ignite it. If you apply the choke, then you are cutting off the volume of air that can flow through the carb but the suction from the piston remains the same.
If the piston is unable to pull air through the carb, then it will try and pull air from any other source that will supply some. Well worn rings can allow air to leak past them but more often than not, it is worn valve guides that supply oil-laden air to the combustion chamber resulting in the blue smoke you see. Blue smoke is from burning engine oil with the air/fuel mixture. Once the engine starts, warms up a bit and you back off the choke, then the oily air getting past the rings and valve guides stops and so does the blue smoke.
Most air-cooled flathead engines call for straight 30 oil except when the temps fall below the freezing point. Using 10/30 or 5/30 oil isn't a problem providing you keep a close watch on the dipstick and top up the oil level every time you use the tractor. And if you are using it for more than 3 hours straight, then stop and check the dipstick before continuing.
Multi-grade oils are a wonderful invention BUT..... the old engines will devour them faster than if the straight grades are used. Don't lose your engine because you forgot to check the oil level. You probably have several years of good service in those engines before they need rebuilding. Once you see blue smoke all the time, then that's when the rebuild is needed.
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 - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[More Ads]
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.