Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo Auction Link (800) 853-2651

Shop Now

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

Discussion Forum

Tractor won't start up now!

Welcome Guest, Log in or Register
Author 
David

02-28-2003 16:27:37




Report to Moderator

A couple of days ago I replaced the fuel filter on my 3000 Ford tractor (3 cyl. diesel w/ c.a.v. injector pump). I bled the filter housing, beld the injector (unscrewed the small 5/16" bolt on the injector housing). Fuel shot out fine from the injector, with no air. I can't get the 3 injector lines to pump diesel right. When you crank the tractor over a very small amount comes out. You can hold your finger over any or all of the ports and it stops the fuel. The manual says it should be putting out over 2000 psi. What's going on? I even rebled the filter and the injector pump bolt. Please help me, it's driving me nuts! This tractor ran before I put the filter on.

[Log in to Reply]   [No Email]
Marcel

12-02-2003 04:05:26




Report to Moderator
 Re: Tractor won't start up now! in reply to David, 02-28-2003 16:27:37  
I have a similar problem with the pump on my IH444. Previous owner had problems with fuel system, removed some components and added a 12v fuel pump before the filters. I had problems w/ that pump and had to bleed the system a couple times. The last time I found was getting very little out of the lines at the injectors. I have now removed the pump and I am going to have it rebuilt. Should that pump draw fuel from the tank through the filters without that little 12v pump after?

[Log in to Reply]  [No Email]
JK

03-02-2003 18:08:42




Report to Moderator
 Re: Tractor won't start up now! in reply to David, 02-28-2003 16:27:37  
It appears as though you have loosened or disconnected all three injector lines at once,
if so you might try snugging up two of them so only one is loose at a time (just a little not completely). For some reason, some injector pumps don't seem to want to pump if all the lines are loose at the same time. CAV pumps seem to the ones that are more sensitive to this than most others I have worked with. It seems that if you have the line only a little loose so some pressure is built, it will prime faster.

Hope this helps.

John

[Log in to Reply]  [No Email]
HTR

03-01-2003 22:18:11




Report to Moderator
 Re: Tractor won't start up now! in reply to David, 02-28-2003 16:27:37  
CAV pumps are harder to bleed than most pumps. Try removing the five sixteenth screw in the round part of the pump, and pump more fuel through it than you think is necessary, and reistall the screw and tighten it while the fuel is still sqirting. Leave one line loose and give it enough either to get it fireing. After it starts tighten the last line.

As far as the 2000 pounds of pressure, no restriction, no pressure. If you can hold 40 pounds of pressure with your finger you will have 40 pounds of pressure in the line. The delivery valve does cause more pressure to enter the line, but with no restriction at the end of the line it does not exit at delivery valve pressure. The injector nozzle is where the restriction occurs to create the high pressure. The nozzle plunger is held down by a heavy spring that requires the 2000 pounds of pressure to unseat it. At this time is when the lines would have the 2000 pounds of pressure in them. You are safe with your finger over the open line at cranking speed. I wouldn't experiment too much with my finger with the engine running. If fuel does enter your skin it will be carried through your blood, and can cause blood poison.

[Log in to Reply]  [No Email]
RussUPMI

03-01-2003 07:47:09




Report to Moderator
 Re: Tractor won't start up now! in reply to David, 02-28-2003 16:27:37  
Since the tractor was running OK before you changed the filter, we'll assume that air is the probable culprit. I will mention that just because the injector tip pressure is 2000 psi or more does not mean that an open injector line is delivering that high of pressure. When I have done complete rebuilds on diesel engines all of the lines are empty when trying to get initial start-up. Cracking the lines at the injectors allows all of the air to escape. It is always interesting to see how little the flow of fuel is from these lines as air is purged. Once the air is purged from each injector [as each one flows free of bubbles, tighten it] start-up can still be difficult. Under these conditions I will use a very short spray of ether, just enough to get the engine to fire. It might take a couple of tries to get it going. Don't use the thermostart while using ether, if you have that feature on your tractor. If the tractor will not keep running after several tries, I guess you will need to dig deeper. I will add that if you have a block heater, plug it in long enough for the whole engine to be very warm before going through all of this. It will be a lot easier on the battery and starter, which you probably know anyway, but I just wanted to mention it. I've got my fingers crossed!!!

[Log in to Reply]  [No Email]
Fred Kobs

02-28-2003 16:39:03




Report to Moderator
 Re: Tractor won't start up now! in reply to David, 02-28-2003 16:27:37  
I don't know the answer to your ?, but please QUIT holding your finger over a connection that is supposed to have 2000 psi. It will shoot fuel thru your skin and poision yourself. Fred



[Log in to Reply]  [No Email]
David

02-28-2003 16:42:19




Report to Moderator
 Re: Re: Tractor won't start up now! in reply to Fred Kobs, 02-28-2003 16:39:03  
Well I did watch it first before putting my finger over it! I'm not stupid you know! Just because a little fuel comes out doesn't mean it's got the right pressure. I hope someone out there can tell me what's wrong.



[Log in to Reply]  [No Email]
Fred Kobs

02-28-2003 17:10:27




Report to Moderator
 Re: Re: Re: Tractor won't start up now! in reply to David, 02-28-2003 16:42:19  
Sorry, absolutely didn't mean to imply that you are stupid. Just scares the beejeezus out of me. Had a employee do the same thing once and I wouldn't wish the outcome on ANYone. P.S. what if the darn thing happened to prime up all of a sudden? It can happen to the best of us. Again, I didn't mean to offend. Fred



[Log in to Reply]  [No Email]
Mrs Soda

03-01-2003 04:19:11




Report to Moderator
 Re: Re: Re: Re: Tractor won't start up now! in reply to Fred Kobs, 02-28-2003 17:10:27  
His finger , his A*$ HUH?



[Log in to Reply]  [No Email]
David

03-01-2003 11:16:19




Report to Moderator
 Re: Re: Re: Re: Re: Tractor won't start up now! in reply to Mrs Soda, 03-01-2003 04:19:11  
What I failed to mention is that I had a rag between my finger and the injector line ports. I've already read in the I&T manual how that the pressure can puncture your skin so I would not just put my bare finger on them. I fiddled around on it some more last night with no results. Even put a gassy rag over the intake and cranked. A little smoke came out but nothing special. A good tractor mechanic told me to do that.

[Log in to Reply]  [No Email]
RickB.

03-02-2003 03:42:03




Report to Moderator
 Re: Re: Re: Re: Re: Re: Tractor won't start up now! in reply to David, 03-01-2003 11:16:19  
If he's that good a mechanic, he should know that gasoline won't fire on compression. That is why gas engines have sparkplugs. And quit breaking on us for being concerned about fluid poisoning. If you are going to do stupid things, at least don't tell us. Check the gaskets on the fuel filter and repeat the bleeding proceedure. Hook up a battery charger,too. Your cranking speed is too slow.



[Log in to Reply]  [No Email]
wake up

03-01-2003 16:25:42




Report to Moderator
 Re: Re: Re: Re: Re: Re: Tractor won't start up now! in reply to David, 03-01-2003 11:16:19  
he is trying to save your life do you think a rag will stop 2000 psi? just friendly advice



[Log in to Reply]  [No Email]
David

03-02-2003 10:42:38




Report to Moderator
 Re: Re: Re: Re: Re: Re: Re: Tractor won't start up now! in reply to wake up , 03-01-2003 16:25:42  
Well my tractor mechanic has been doing well for 58 years now, so he must know something about tractors, hmmm. He told me to do that to get the tractor to spin faster which might get the injector pump primed up faster. I have kept the battery charger on it from the start. This tractor always takes forever to start up anyway. I've taken the filter assembly back apart checked the gaskets, filter, housing, o-ring, everything looks okay. I rebled the filter, rebled the injector pump at the bleed bolt, but it still won't fire good out of the injector tube ports. Could some trash have gotten into the intake on the pump where the steel line connects? Let me know of any thoughts, I'll try 'em all.
Thanks for your help so far.

[Log in to Reply]  [No Email]
RickB.

03-02-2003 11:10:18




Report to Moderator
 Re: Re: Re: Re: Re: Re: Re: Re: Tractor won't start up now! in reply to David, 03-02-2003 10:42:38  
My rule of thumb for the CAV rotary pump is if it pumps fuel out of the open bleed port onto or as far as the front tire with a light pulse but no bubbles or spurting, the head and rotor are primed. If this is the case,it should start, eventually. Use of ether, though most of us would rather not, may help here. If not, you could try towing it to make up cranking speed and generate some heat. You are cracking the injector lines at the injectors, not the pump?

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


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