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

Shop Now

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

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

Allis Chalmers Discussion Forum
:

WD... gas in oil pan

Welcome Guest, Log in or Register
Author 
rjw

11-02-2005 12:44:50




Report to Moderator

I posted this awhile back and the problem continues. My WD uses LOTS of gas, sounds good when running, has plenty of power, does not have blue smoke, and has over 100 pounds of pressure in each cylinder. But... the gas ends up in the oil pan. The dipstick oil is thin, smells of gas and actually rises with use. I have gone through the carb. What is going on here? Ideas?




[Log in to Reply]   [No Email]
Punchie

11-06-2005 17:35:34




Report to Moderator
 Re: WD... gas in oil pan in reply to rjw, 11-02-2005 12:44:50  
Well ?? I give you a few thing to think about.

First Normal Gas to Hour for all the WD's I use are 1- 1.5 per hour , 1.5 is heavy runnning at full gas brushhogging. Would say pulling a 2X16 plow at about 6-8 inchs deep around 1.25 Gallons / Hour

Next I change my oil late spring, early summer. Just for what you Are saying, a lot of winter choking and the oil smells like gas. Not good to run her hard if it smells of too much gas.

Let see , I would guess if you running hills. Coming down and the back press-breaking you may get allot of gas that is not burned into the oil.

Remember most old tractor where made to run on the rich side but not the supper rich, just a little carbon in the exhaust is good, very little back smoke if any.

[Log in to Reply]  [No Email]
BCnT

11-03-2005 07:54:44




Report to Moderator
 Re: WD... gas in oil pan in reply to rjw, 11-02-2005 12:44:50  
other than the petcock leaking when its turned off [replace or repair it] you may have a heavy float thats sinking and allowing gas to flood intake...next time you go to start tractor pull the air cleaner hose off carb and see how much gas comes out...IF its not filling intake and air cleaner with raw fuel its pooling in carb throat and hose...when you spin engine over its drawn into cylinders and runs past rings...also there should be a weep hole in bottom of carb throat...make sure its open so any excess gas can drip out.
1 last thing...CHANGE YOUR OIL BEFORE YOU START IT AGAIN!

[Log in to Reply]  [No Email]
cbp

11-03-2005 08:10:31




Report to Moderator
 Re: WD... gas in oil pan in reply to BCnT, 11-03-2005 07:54:44  
If it were just pooling and overflow from the carb, a simple way to debug would just be to shut off the gas to kill it for awhile and even drain the bowl while trying to figure it out. I'm just assuming it's a tight enough system that if he's shutting the gas off, nothing should really be causing further overflow in the carb. Your idea is that it's pulling in an excess during the initial spin when starting? If so, running it dead with the gas off (as opposed to just turning off the gas after shutting down) for awhile should prove if that's it. that's not a bad practice anyway really.

Now that you mention it, I did have an updraft machine where I was pooling back in the hose and it was quite a bit of fuel in there.

[Log in to Reply]  [No Email]
BCnT

11-03-2005 08:44:22




Report to Moderator
 Re: WD... gas in oil pan in reply to cbp, 11-03-2005 08:10:31  
if the petcock is seeping you can run tractor out of gas with it turned off BUT over time bowl will refill and overflow...those screw type petcocks are prob the biggest piece of junk i ever saw...i usually put a modern gate valve inline on my equiptment for positive fuel control.



[Log in to Reply]  [No Email]
J.C. IN AZ.

11-03-2005 07:26:10




Report to Moderator
 Re: WD... gas in oil pan in reply to rjw, 11-02-2005 12:44:50  
Try running with a low Gas level in the Tank for a while. If your problem {which I have never heard of about in an updraft Carb.] persists I would change the Float Needle and maybe the Float also.An full Tank may force Gas past the Needle Seat and up the Manifold into the Head and down to the Crank Case?? Really strange. If you have an over rich Carb.setting how is it even running? Is there Blue or Black Exhaust Smoke?

[Log in to Reply]  [No Email]
cbp

11-03-2005 05:04:26




Report to Moderator
 Re: WD... gas in oil pan in reply to rjw, 11-02-2005 12:44:50  
That really is a weird one? Blowby simultaneous to lots of unburned gas yet a mixture that still allows it to run???. Normally, the thing should run lousy. The cylinders do get conical after many years of use and it can show passable compression even if at the bottom of the stroke there would be leakage leading to blowby. In that case you should have a positive pressure in the crankcase compared to that in the cylinder should bring oil into the cylinder (thus that wonderful blue smoke we get). I guess I could imagine on the intake stroke some leakage into the case. If the leakage occurs at that point, 1. the crankcase pressure must be pretty low, 2. The leakage pretty extreme, and 3. some offsetting factor in the intake mixture to keep the thing running. I would not expect it to start yet alone run at that rate. Can it start without being choked? Is your oil pressure low after pump up (and of course when the case isn't showing as overfilled)? It's really stretching but I spose it could be a combination of cylinders/pistons/rings past servicability, restricted air intake all coupled with low crankcase pressure. I.E., if the latter weren't true, you might show a trace of burned oil?? Just thinking out loud.

[Log in to Reply]  [No Email]
BushogPapa

11-02-2005 14:48:29




Report to Moderator
 Re: WD... gas in oil pan in reply to rjw, 11-02-2005 12:44:50  
Are you running that WD Upside Down Again..????....!!!!

You still have carb problems...!!!!

Change the oil, and see if the gas still contaminates the oil..maybe it does not, now... Do you turn your gas OFF when not in use..??? Maybe you should...I do...

Ron..



[Log in to Reply]  [No Email]
rjw

11-02-2005 15:00:26




Report to Moderator
 Re: WD... gas in oil pan in reply to BushogPapa, 11-02-2005 14:48:29  
yes, I shut the gas off when not running. What could be wrong in the carb that would not get burned in the cylinder? Good spark on all 4. How can it get in the oil with good pressure in each cylinder?



[Log in to Reply]  [No Email]
BushogPapa

11-03-2005 14:49:10




Report to Moderator
 Re: WD... gas in oil pan in reply to rjw, 11-02-2005 15:00:26  
It would have to be smoking black smoke... Is it running at Normal temperatures..?? It should be "in the green"..if it is running too cold, it could be that it is not burning all the gasoline and some could get into the oil.. Take the sediment bowl glass off and see if the fuel is really "off"..not flowing... I don't see any other path fpr the gas to get into the oil otherwise..

Ron..



[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