Posted by Ken Macfarlane on November 27, 2013 at 09:20:32 from (142.166.168.2):
Got a Delphi DP210 I am trying to solve here. Its quite a bit like a Lucas CAV mechanical governed with some extra emissions junk on it.
It always used to have a bad stutter or misfire coming off full load too fast. To me thats related to the timing advancing or retarding too far. Could live with that.
Last day of haying this year after a fillup it got such that it had less and less power, and would instantly stall with very hard restart if you suddenly reduced throttle setting. At same time turning the key off (solenoid stop only on the pump) caused a long run on before shut off instead of normal quick.
Checked filters and yup goop and water. Cleaned, primed, good flow to the pump inlet. Added atf and cleaner and have run the tractor 3-4 hours with little change despite no water.
Blew out lines to tank incase there was a restriction on the return but it seemed ok. Removed inlet connection on pump as there is supposed to be a screen but didn't find one.
The darned thing is a keyless pump so engine has to be put to TDC on #1 properly before you lock the shaft to take pump off so trying to figure out if it has to come off.
Delphi certified pump shop wants 2000$ to diagnose and minor overhaul on pump which I don't happen to have. Seems a bit steep given there are only about 200$ of things they replace.
I'm thinking the fuel delivery valve is the common part to the recent problem, the shutoff plunger I think is supposed to push that arm to 0 setting to shut off engine. The throttle linkage I think just pulls on the governor linkage which runs the valve. The boost diaphragm just moves to let fuel valve linkage travel farther under boost.
I just can't figure out why even just a small sudden reduction in throttle lever position causes an immediate hard stall that makes restart impossible for 5 mins.
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 - Oil Bath Air Filters - by Chris Pratt. Some of us grew up thinking that an air filter was a paper thing that allowed air to pass while trapping dirt particles of a particles of a certain size. What a surprise to open up your first old tractor's air filter case and find a can that appears to be filled with the scrap metal swept from around a machine shop metal lathe. To top that off, you have a cup with oil in it ("why would you want to lubricate your carburetor?"). On closer examination (and some reading in a AC D-14 service manual), I found out that this is a pretty ingenious method of cleaning the air in the tractor's intake tract.
... [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.
