99 f250 7.3 L blowing white smoke and loss of power - Ford Powerstroke Diesel Forum
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post #1 of 6 Old 01-18-2013, 08:17 AM Thread Starter
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Question 99 f250 7.3 L blowing white smoke and loss of power

My f250 started acting up a couple of months ago. First going up hill. The more throttle I gave it the slower it got. Finally got to where it would only do about 20 - 30 mph. Turned it off for a few min then started it back up ( thinking fuel filter ). It ran better. Was able to drive 60 miles back home at 60 mph. If I gave it throttle hard it would bogg down and I would have to do all of this again. I changed fuel filter under the hood. It fixed the problem for a couple of weeks. Started doing it again off and on. Then I noticed that it was only doing it when the fuel got down close to a quarter of a tank. Now I am seeing white smoke when I give it hard throttle and loss of power. It is getting worse every time I run it. I also drained the water separater behind the fuel filter. That did help, but it started back up. i am not seeing any black smoke at all like normal. A little history, I was running used cooking oil and diesel 50 50. Did that about 6 months. The truck ran better than ever. I was unable to get the bio any more so I went back to straight diesel. About 6 months later is when all of this started. I am again back to running 50 50 again. It has just now started getting cold here in Alabama. So I am running 60 diesel and 40 bio. As far as I know, the truck is all stock. have not noticed any drop in coolant. Thinking cracked head or blown head gasket. i was told that it could be the screen in the tank. Also was told that it might be the egr sensor? Any help. I'm running out of ideas. I can do most of the work myself. As long it doesn't get very deep. I'm new to working on diesels. I work on bikes and small engines. I am getting my bio from a licensed waste cooking oil recycler. It is very clean. I know a lot of people running it with no problems. Any ideas? Help please
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post #2 of 6 Old 01-18-2013, 09:06 AM
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Re: 99 f250 7.3 L blowing white smoke and loss of power

No egr at all.
I'd pull the tank to make sure it's clean

I made my Samsung SGH-I997 send this.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #3 of 6 Old 01-18-2013, 03:27 PM Thread Starter
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Thanks. Haven't looked into that yet. Is it much trouble to do. Have I got to take off the bed. Or can I drop it from below. Do u think cooking oil has any thing to do with it?
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post #4 of 6 Old 01-19-2013, 06:44 AM
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Yea, possibly. I know that it needs to be filtered a lot and centrifuged. Not just dumped straight in with diesel.
You can either raise the bed or drop the tank.



2000 F-350 Lariat Super Duty, Dually, CCLB, 7.3L
4R100, 2wd
330,000 + miles
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post #5 of 6 Old 01-21-2013, 07:44 AM Thread Starter
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I agree. The oil is ran through a centrefuge. It is filtered down to 1 micro ??. The oil is ran through every filter out there and heated and separated. So I can just drop the tank. Wasn't sure if I would be able to do that without pulling the bed. Thanks
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post #6 of 6 Old 12-02-2014, 08:28 AM
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Exclamation I need help ASAP

So my 7.3 is doing about the same things it's a 96 it's blowin white smoke an also Boggs down to about 30 mph what's the problem replaces all seals oil pan to pick up tube all bearings new clutch an Hewitt pump aka hpop I need help a lot of it I'm 18 text me its (509)431-7099 plz I really need it I spent 4 grand then. 5 k for the truck my money not like how others gets mommy and daddy's money
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