Tractor Talk Discussion Board |
Re: Compression
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Joe (Wa) on November 03, 2004 at 13:03:50 from (67.5.134.30):
In Reply to: Re: Compression posted by Bobby Turner on November 02, 2004 at 20:11:50:
I don't mean to question your experience or technique so if my post does not apply please ignore. The declining compression pressures may be related to cranking rpm if you sequenced 1 2 3 4. Perhaps 4 3 2 1 with a fresh battery would change or support your existing readings. An accurate compression reading can be obtained with a fully charged battery connected to a battery charger. After one cylinder has been tested wait until the amps drop on the charger and check all cylinders at the same amp reading. On the #4 cylinder, put a plug in from one of the other cylinders that you know is firing good. Run the engine, note the rpm, pull the plug wire and hold the terminal about ¼” from the plug. That will introduce an auxiliary gap that retards the coil discharge producing a higher voltage spark. If the engine rpm picks up there probably is excessive oil in the combustion mix. A wet check is good for worn rings but it doesn’t mean much if a ring is broken or the cylinder is scored. I think I would drop the pan, and check for ring pieces and try to view the bores and piston skirts. Of course, if you find something here an overhaul is in order. At least you know what you’re getting into with less effort. Joe
Follow Ups:
Home
| Forums
Today's Featured Article -
A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[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 |
|