1996 f250 powerstroke vanishing oil. - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 21 (permalink) Old 09-03-2019, 01:46 PM Thread Starter
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1996 f250 powerstroke vanishing oil.

So yesterday we were talking our other truck to drop it off at the dealer and my fiancé have to stop and get fuel and go to the store so I was killing some time and started the truck up and let it warm up and went and picked some stuff from the garden. Came back and truck had died. Truck wouldn’t start so I I go to change fuel filter and right be for I do that I check the oil. No oil on dip stick. Add a gal and a half and we are off going down the road. Well I took about 130 mile trip and I had to add another 4 gal during this. There is t 4 gal worth of oil on the ground and not 4 gal worth of oil going out the tail pipe. I’m thinking injector o rings and the oil is just mixing with fuel and being returned to tank. Does this seem to be the correct assumption?
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post #2 of 21 (permalink) Old 09-03-2019, 01:59 PM
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Re: 1996 f250 powerstroke vanishing oil.

Look at your fuel filter, odds are it will be black.

Injector O rings are in your future if it is.

96 F250 XLT 4x4, 4:10 gears, 5 speed, Tymar intake and HX hose, downpipe, pyro and boost guages, coolant filter, Luc clutch
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post #3 of 21 (permalink) Old 09-03-2019, 04:22 PM Thread Starter
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Re: 1996 f250 powerstroke vanishing oil.

I’ll be back home Thursday and I will check but that’s what I’m thinking. Really not many places for that much oil to go if not leaking or burning.
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post #4 of 21 (permalink) Old 09-03-2019, 05:29 PM
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That much oil has got to be injector O-rings. The only other place would be that terrible but that things should be smoking like a train if that was the case

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post #5 of 21 (permalink) Old 09-03-2019, 06:13 PM Thread Starter
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Re: 1996 f250 powerstroke vanishing oil.

Ya I agree. At one point I was leaking a gal every thousand miles and the truck would drop oil from rear axle when I stopped at stores and stuff lol. Was thinking about telling my better half the injectors were bad and putting baby swamps in it haha. Prolly shouldn’t do that....
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post #6 of 21 (permalink) Old 09-03-2019, 07:20 PM
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Re: 1996 f250 powerstroke vanishing oil.

Now would be the time to do it if you can swing it.

Also if your glow plugs haven't been changed out that you know of, change them out now since you will have them out when you do the injectors.

96 F250 XLT 4x4, 4:10 gears, 5 speed, Tymar intake and HX hose, downpipe, pyro and boost guages, coolant filter, Luc clutch
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post #7 of 21 (permalink) Old 09-03-2019, 08:40 PM Thread Starter
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Re: 1996 f250 powerstroke vanishing oil.

I did those like 25000 ago. Ya I think she would be a little angry with me if she found out lol
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post #8 of 21 (permalink) Old 09-04-2019, 01:47 PM
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Re: 1996 f250 powerstroke vanishing oil.

That is how I got my 97 F350
She "drank" almost all 15 quarts of her oil

If you look at how the HEUI injector works....there is over 3000 psi in the high pressure oil side of things and only 68 psi of fuel rail pressure
So when the O rings that separate the high pressure oil from the fuel system fail....well it does not take long for 3000 psi worth of oil pressure to feed oil into the combustion chambers.
Basically your crank case oil becomes fuel
Injector O rings are the cause
If you have hard starts when cold then it maybe time for new injectors (worn poppet valves)
Also check the coolant cups very carefully when installing new O rings, you must get everything very very clean for the O rings and copper crush washer to seal.

I went through the wringer with my 97.......only had my injectors out like 4 times now shes a hauling SOB daily driver :)

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post #9 of 21 (permalink) Old 09-04-2019, 03:35 PM Thread Starter
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Re: 1996 f250 powerstroke vanishing oil.

Ya I’m thinking a lot of the oil got mixed with fuel and returned to take because the truck didn’t smoke much. Going to see what ford wants for there orings. How you like your baby swamps. I remember reading your build.
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post #10 of 21 (permalink) Old 09-04-2019, 04:56 PM
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Re: 1996 f250 powerstroke vanishing oil.

Diesel O Rings will have a better price on O rings than Ford perhaps. I know that Ford has been having some good prices on parts.

96 F250 XLT 4x4, 4:10 gears, 5 speed, Tymar intake and HX hose, downpipe, pyro and boost guages, coolant filter, Luc clutch
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