Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
Case Tractors Discussion Forum

400 Diesel

Welcome Guest, Log in or Register
Author  [Modern View]

08-12-2011 17:29:57

Report to Moderator

My 400 has taken to acting like it is running out of fuel and dieing. If you try to restart right away you get zero smoke, if I give it a little shot of starting fluid(I know that is bad, no need to tell me!!!)it will restart. but will do it again in 10 or 15 min. I suspect something in the tank is blocking the fuel line, I've drained at every moisture/water drain-no help. What are the other possibilities. Thanks for your assistance...gobble

[Log in to Reply]   [No Email]
Pat T

08-18-2011 17:23:58

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
Don L-

I believe that, I've been chasing 1st stage filter plugs for the past two years. Every time I thought I had the system clean it would run an hour or so and then the vacuum gauge would start picking up, another hour and I'd be dropping the filter in the field to clean the gooey varnish off to keep baling hay. This spring I got fed up and put a whole quart of diesel treatment in the tank (supposed to be enough for 250 gals) and ran it. Vacuum & pressure gauges returned to normal. I am convinced that whatever crap diesel is made of now won't run in a 50+ year old engine.

[Log in to Reply]  [No Email]
Don L.

08-16-2011 16:59:17

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
I have been told just last Sat at the Case show, by a good Case man, that todays fuel won't go thru the brass first stage filter. I have a tractor that has the same action as yours . I changed all my filters,and my next thought was the charge pump was weak. But I may take out the brass filter to see if that does it. Mine has to be under load to quit. I best put a good vac gauge on it too. Don L.

[Log in to Reply]  [No Email]
Doc Larry

08-18-2011 16:34:49

Report to Moderator
 Re: 400 Diesel in reply to Don L., 08-16-2011 16:59:17  
Don - Mine has run fine even in winter (around zero depending on how anxious I am to plow) with the original brass filter in place. I really do recommend the alcohol - acetone treatment on the filter, because my brass filter was clogged with varnish, not particles.....

[Log in to Reply]  [No Email]

08-14-2011 16:55:21

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
Did you close the bleeder screw on the first filter completely? Tractor will start and run, but it won't have much power, any change in load could make it die. Dale

[Log in to Reply]  [No Email]

08-13-2011 19:58:35

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
Take the fuel line off at the fuel tank shut off. See if you have a good flow of fuel out of the tank by turning the fuel back on. If it's drains slow tap the valve till the obstruction is removed. Don't blow it back into the tank. If the tank is dirty drain the water drain often as the dirt will also settle in to the water trap.

[Log in to Reply]  [No Email]
jon f mn

08-13-2011 09:02:38

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
I would still change all 3 filters. If the tractor hasn't been run for a while, or if this is trhe first tank of fuel with soy oil in it, the new fuel will clean all the old gunk that has built up over the last 60 years out and plug the filters on the first tank. The soy oil cuts all the old gunk right out and shines everything. It also goes bad faster so if the tractor sat for the winter it would give you trouble. If you don't use the fuel up every few months you should always use a fuel treatment like Howes or Motor Kote to keep fuel fresh.

[Log in to Reply]  [No Email]
Doc Larry

08-13-2011 06:24:11

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
You have all the symptoms of a blocked primary ("first stage") filter. This is the filter on the SUCTION side of the transfer pump, which is the first filter the fuel encounters after leaving the tank. If this is blocked, you should show high vacuum on the gauge below the steering column IF the gauge works. Regardless, I strongly recommend you pull that filter, wash it, then soak it in a mix of denatured alcohol and acetone, blow it out with compressed air, the fill it up and bleed, etc. I think this will solve your problem. When mine did this, I could pour diesel into the screen filter, and it would hold (not go through) due to VARNISH. If that doesn't work, take a look inside the tank with a flashlight and see if anything is drifting around and blocking the inlet line. Note the book does not recommend replacing the final filter on a regular basis.....because of the risk of getting dirt into the system.
PS - Ether has it's uses from time to time, but never on a hot engine....In my opinion, anyway.

[Log in to Reply]  [No Email]

08-12-2011 19:40:33

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
Roger,Jon, Thank you for your help and expertise.I did not think to look at the pressure gauge.(I've been feeding bananna bales thru the baler by hand) I haven't run a full tank of fuel thru the filters since last replacement. I'll start with the gauge check, then fuel tank inspection, then fuel filter replacement. thanks guys

[Log in to Reply]  [No Email]
Roger S

08-12-2011 20:03:15

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 19:40:33  
If the injection pump ran out of fuel, it can be hard to get restarted. I've had to loosen fuel injector lines, or pull start it to get it restarted. Probably depends how good the inj pump is.

[Log in to Reply]  [No Email]
Roger S

08-12-2011 18:57:42

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
Tom: There is a small line by the second stage fuel filter that connects to a pressure gauge on the dash,if the gauge doesn"t work unhook it and screw a oil pressure gauge in and you can watch the transfer pump pressure. On the outlet side of the second stage filter is a pressure releaf valve that can stick open, it opens at 20 or 25psi if there is a restriction beyond that point, and dumps fuel back into the tank. The third stage filter (By the fan blades) is the most common one to plug. I have a 400 that had the factory fuel gauge in the tank. It had a screen around the outside that came appart in pieces and would cover the fuel line opening and stop the tractor. I pulled it home and it started and ran fine, till they moved and covered the opening again. Good luck: Roger

[Log in to Reply]  [No Email]
jon f mn

08-12-2011 18:16:49

Report to Moderator
 Re: 400 Diesel in reply to tomturkey, 08-12-2011 17:29:57  
change all 3 fuel filters. 1 is plugged

[Log in to Reply]  [No Email]
John Saeli

08-13-2011 05:01:26

Report to Moderator
 Re: 400 Diesel in reply to jon f mn, 08-12-2011 18:16:49  
I agree!! Would be a shame to crack a head because of a plugged filter.

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

Hop to:

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

Today's Featured Article - Trenching With a Plow - by Staff. Introduction: This interesting information came from one of the discussion forums here at YT. We thought we should place it up front so it could be read by anyone interested in putting old iron to work. [Editor] I tried something new today, and it worked so well I thought I should post it - in case it might help someone else. I'm running 100 yards of 4" drain pipe from the gutter downspouts of our house to a pond down the hill. This should hel ... [Read Article]

Latest Ad: 990 7 foot mower conditioner john deere hay rake pto driven john deere head carrier [More Ads]

Copyright © 1997-2021 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