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Old Mar 20, 2009 | 07:18 PM
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Ford diesel tractor question

I'm shure that a few of you own Ford tractors as well as trucks. My question is has anyone heard of mixing oil with diesel to swell up the o-rings in the injector pump to fislow) a leak? It's not the right way. I know that, but they still run great and I shure can't afford new pumps.
 
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Old Mar 20, 2009 | 07:36 PM
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Send a pm to Chris(F350-6). I don't know if he has any fords, but I know he has a couple of tractors.
 
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Old Mar 20, 2009 | 07:41 PM
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I've never heard of it, but that doesn't mean it doesn't work. I'd imagine that oil would have a tendency to settle out since it's heavier and that would cause problems.

I can't really tell you anything for sure, but that's what I'd assume would happen.

-Ford 2120 4x4 w/loader
 
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Old Mar 20, 2009 | 09:29 PM
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People used to dump used motor oil in the tank to help lube the injection pump, keep the seals from drying out, and to have a place to put used motor oil. I don't think oil will make the o-rings swell. I don't know of any o-ring material that is compatible with fuel, that will swell up when exposed to oil.

Have you been running any additives in the fuel? Is LSD available in your area or just the ULSD stuff? Unfortunately this is one of the side affects of ULSD.

I'd say your best bet for swelling the o-rings will be summer time temps, but if you start or continue to use ULSD, then I would expect it to get worse.
 
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Old Mar 20, 2009 | 10:31 PM
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Originally Posted by F350-6
.......... I don't know of any o-ring material that is compatible with fuel, that will swell up when exposed to oil............
Buna-N will definitely swell with oil.

Pull your CPS and try to push that slimey, wormy o-ring back in.

Even better, Pull the oil fill tube out of the valve cover. That o-ring will be at least 2 dash sizes larger than the original.
 
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Old Mar 20, 2009 | 11:55 PM
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I think oil need more temp to burn can cause exhaust problem,used motor engine can clog you system small pieces metal been whith your fuel system.
 
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Old Mar 21, 2009 | 02:38 AM
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Originally Posted by guzzle92
Buna-N will definitely swell with oil.

Pull your CPS and try to push that slimey, wormy o-ring back in.

Even better, Pull the oil fill tube out of the valve cover. That o-ring will be at least 2 dash sizes larger than the original.
Is that what they were using in the 70's. I was going to mix new oil with the diesel not used. It couln't hurt the engine could it?
 
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Old Mar 21, 2009 | 06:58 AM
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Engine oil will definately burn in a diesel engine. It has a higher BTU than diesel. It is kind of like octane booster to gasoline. I really dont reccomend putting used engine oil in a fuel tank. When you drain engine oil from the engine, all the junk from inside the engine ends up at the bottom of the pan, and if you put it into the fuel tank it can cause problems.

What I reccommend is putting a clean oil in it like a quart of atf or a quart of marvel mystery oil. It will help clean the fuel system and be like a fuel booster. Plus it helps lubricate the injection system. Just make sure the bottles are new and have never been opened to keep crap out of your fuel system and engine.

I really dont know how much the orings will swell, even with engine oil, more than they have already with the fuel, but you dont want to contaminate the fuel with junk from the bottom of your oil pan.
 
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Old Mar 21, 2009 | 07:10 AM
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A quick google search revealed this.
He's down in Mississippi.
Diesel Injection Pump Repair and sales from Mike's Tractor
 
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Old Mar 21, 2009 | 08:08 AM
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I have had a few Ford/New Holland tractors. I now run Johndeere. . I always pump fuel out of the transfer tank in back of my truck. I always use DK in my tractor and truck.
 
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Old Mar 21, 2009 | 08:16 AM
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Originally Posted by guzzle92
Buna-N will definitely swell with oil.

Pull your CPS and try to push that slimey, wormy o-ring back in.

Even better, Pull the oil fill tube out of the valve cover. That o-ring will be at least 2 dash sizes larger than the original.
I didn't know Buna N would swell like that. Do you think a small amount of oil added to the fuel would be enough to have any affect?

I guess I've been lucky. I've never had an issue with the CPS or fill tube o-ring swelling making it a pain to re-install.
 
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Old Mar 21, 2009 | 08:28 AM
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Originally Posted by miller_feed
I have had a few Ford/New Holland tractors. I now run Johndeere. . I always pump fuel out of the transfer tank in back of my truck. I always use DK in my tractor and truck.
1st. new holland IS NOT a Ford
2nd. that green paint is expensive
We run a a 71 3000 that hasn't been overhauled since new. Only a headgasket thanks to me dumb a$$ cousin and a couple clutches. Think i'll try some moter oil in it today. Got some fresh 10-40 motercraft on the farm.
 
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Old Mar 21, 2009 | 08:44 AM
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Originally Posted by F350-6
I didn't know Buna N would swell like that. Do you think a small amount of oil added to the fuel would be enough to have any affect?

I guess I've been lucky. I've never had an issue with the CPS or fill tube o-ring swelling making it a pain to re-install.
% of swell on any elastomer depends on the type and concentration of the agent it is exposed to along with temperature. If a small dilution would affect it or at what %, I don't know.

The shoulder on the oil fill tube is wide enough that I have not had a problem with re-installing it but at some point it will get oil saturated enough to tear.

Back in the days of the blue CPS, I really had to fight the original black CPS to get it back in and it still seeped some. That one PO'd me enough to begin my search for better o-rings.
 
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Old Mar 21, 2009 | 08:51 AM
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Originally Posted by 61 uni
1st. new holland IS NOT a Ford
2nd. that green paint is expensive
We run a a 71 3000 that hasn't been overhauled since new. Only a headgasket thanks to me dumb a$$ cousin and a couple clutches. Think i'll try some moter oil in it today. Got some fresh 10-40 motercraft on the farm.
I think it was a '92 that I bought and it had both FORD stickers and NEW HOLLAND stickers on it.

The 2600, 3000, 3600, 4000, 4600 were some good tractors. You can still find them working hard.
 
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