TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Farmall & IHC Tractors Discussion Forum

DT436 injection- tell me it ain't so!

Welcome Guest, Log in or Register

Author

P Backus

09-11-2005 21:38:20

Report to Moderator

I have a 4166 (with the DT436) that has been acting up. After running a couple of hours, the engine will starve for fuel, dog down and then die. Doesn"t want to restart. Sometimes you can save it by getting the clutch in and letting it "catch it"s breath". If you let it idle for a while to cool down, or if it quit entirely, come back after an hour or two, it will start right up and be good to go again for a while, "til it warms up good again.
So, I changed out both fuel filters, air filter is clean, no crud in the tank because I replaced the bottom of the tank recently. The engine itself is really solid- no excess blowby or oil usage. Same problem.
The tractor, as long as I"ve owned it, never has been a great starter, and it always seemed kind of gutless to me. The pump still has the seals on it, so it"s not been changed. I know that these pumps can be turned up easily, but I"ve never done that. So, by any chance, is there anything that can be done to help this thing out, or am I due for a rebuilt pump? Would "turning it up" help anything at this point? Is there a way to test and repair the "charge pump" that supplies fuel to the injection pump, or is that integral with the injection pump? Will FEMA send donations to "injection pump victims"?
Paul

[Log in to Reply] [No Email]

IHC SUPERTECH

09-13-2005 20:25:25

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

Check and see if fuel tank is vented,then install a 100psi gauge into intake manifold plug and check boost pressure(17-25 psi) full load rated speed. Inj. pump then could be retimed to 18-20 degrees Btdc. If all else fails take off cover w/four bolts and put your 7/16 wrench on it and change your fuel delivery.

[Log in to Reply] [No Email]

James2

09-13-2005 19:34:57

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

Don't fret the apparent lack of bottom end, or so called "launching torque". Mine shows it and others I have talked to report this characteristic. Must be high drivetrain enertia, with all that iron I see hanging under the machine. However, I believe that a slight improvement was made by changing from 80W90 to synthetic 75W90 gear in both final drives and differentials. Never had a lugging complaint after getting started and the turbo is revved up.

[Log in to Reply] [No Email]

Redman

09-12-2005 09:23:35

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

Link
ge here and get the phone numbers,it has been a couple months since i have ordered any fuel pumps but last time they were under $400 for a reman w/1 year warranty.
sounds more like the head is going south,the vent,or gunk in the system should not make them start hard.
if a 436 will not start at 10 degree outside temp without ether their is something wrong with it,and since yours has started hard for awhile i would say that narrows down the search.

[Log in to Reply] [No Email]

P Backus

09-12-2005 21:37:29

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to Redman, 09-12-2005 09:23:35

Thanks Redman, it looks like Howard enterprises will be a great resource for a lot of things.
I suppose the valves could be getting weak, but by listening to the engine crank, it sounds like compression is consistant on all six. That also wouldn"t explain why it will run well for 2 to 3 hours, pulling hard and then die.
I really appreciate your input- somehow I have to get to the bottom of this!
Paul

[Log in to Reply] [No Email]

chadd

09-12-2005 09:19:34

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

Maybe the crud isn't in the bottom of the tank but in the line between the tank and the primary fuel filter. Our 966 started doing something similar. I would start it up drive for a little while and then it would lose power and start to die out. Let it sit a while and it would start right up and be fine a little while longer. We checked the tank and it was clean. My dad took the fuel cap off,took off the primary filter and blew compressed air through the tube between the tank and the filter housing. A little chunk of something flew out and the tractor has run great since and has more power throughout the rpm range. I always like to start with cheap things like this and then move up to expensive things like injection pumps. Hope this helps.

[Log in to Reply] [No Email]

P Backus

09-12-2005 21:44:58

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to chadd, 09-12-2005 09:19:34

Thanks chadd,
I do need to check that fuel line, but this tractor will pull hard for 2 or 3 hours before he dogs and dies.
A funny story: I once collapsed a carburetor float by blowing out a fuel line with compressed air. Now I don"t blow air into the carb!
Paul

[Log in to Reply] [No Email]

Jimmy King

09-12-2005 05:10:03

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

The other post may very well be right, but before doing that try reaching up and releasing the fual tank cap first. That will assure you the vent is not plugged.

[Log in to Reply] [No Email]

P Backus

09-12-2005 07:19:44

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to Jimmy King, 09-12-2005 05:10:03

Thanks Jimmy. That"s a good thought. I"ve done that before on other engines, but I never thought about it with this one.
Paul

[Log in to Reply] [No Email]

Allan in NE

09-12-2005 04:43:29

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

Mornin' Paul,

My neighbor just went thru "kinda" the same thing on a 986 and put up with it for a year before he finally bit the bullet and put on a rebuilt injection pump.

He said it would run all day long under wide open load, but if he forgot and happened to reach up and slow the throttle a tad at the end of the field, it would die and would not restart unless it set for at least an hour or two. Then, away it would go again.

Dunno, sure sounds like 'sort of' the same symptoms. That engine ought to start at the first revolution and are one gutsy outfit.

Allan

[Log in to Reply] [No Email]

P Backus

09-12-2005 08:01:09

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to Allan in NE, 09-12-2005 04:43:29

Hullo, Allan
It does sound similar, but mine will die under full throttle. I suspect that the solution will be the same though.
I"ve always heard that those engines were good starters and gutsy, but mine seems to be kind of "milk toast". He pulls well under full throttle (in the past), but is kind of wimpy otherwise. Maybe trying to drag around a 20,000# tractor carcass takes some of the snot out of the ol" 436. It"s not like there are a lot of 4166"s around to compare with.
Paul

[Log in to Reply] [No Email]

Randy in NE

09-12-2005 04:21:45

Report to Moderator

Re: DT436 injection- tell me it ain't so! in reply to P Backus, 09-11-2005 21:38:20

Paul, My brother has a shop where we works on Cummins pumps and injectors. He has had his fingers in more than one Model 100 pump. He has more than a little experience with the DT436. If you would like to call him, e-mail me and I will give you his phone number. He might be able to diagnoise it right over the phone.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

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 ]

Home | Forums

Copyright © 1997-2023 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 Headquarters

Website Accessibility Policy