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Old 03-11-2008, 10:36 AM
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SMMOOOOOOKINNGG BAD !!!

i put this in the 911 for extra exposure

had this 96 f450 (180k miles on it) for about a year. hardly hardly use it. about 2 months ago, it was about a 40degree morning. started and there was big hissing. since, i have find out that that's ok - helps the engine warm quicker. but major major smoke cloud has happened since. white-grey (noxious - not water) smoke billows out of the exhaust which makes such a cloud that big rigs have to hold back behind me. it does not go away and just smokes and smokes. i opened the hood and there was some smoke coming out of passenger side at turbo. the clamp there was really loose so i tightened it but made no difference. also, masses of smoke from drivers exhaust manifold. had the gasket at the manifold replaced ($300) and the smoke is still there. the mechanic said there was a lot of oil in the turbo but that he thinks it could spin by hand. from my search, i can only guess it could be
1 injector o-rings
2 turbo o-rings/seals
3 turbo is broken and needs to be replaced.

the truck starts fine, pulls ok but has a rough idle.
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Old 03-11-2008, 10:41 AM
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Bumping this up for ya!

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Old 03-11-2008, 11:34 AM
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Take off the intake and see how much shaft play is in the compressor wheel.

But i have a feeling it is injector related.
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Old 03-11-2008, 11:49 AM
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Any abnormal sounds associated with this?

So the white smoke doesn't go away - it's consistent while driving?

White smoke is unburnt fuel that hasn't partially burned post cylinder.

Like this?

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Old 03-11-2008, 11:58 AM
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yeah, like the video, only without the tap and the smoke from mine may be a little bluer but at least as much. the smoking does not go away, even when warmed up and on a warmish day (65degrees)

no real strange noises - it idles a little rough but no taps or bangs.
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Old 03-11-2008, 12:12 PM
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At those miles I would think injectors but you already replaced two of them and still get contribution codes for the new ones.
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Old 03-11-2008, 12:17 PM
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ok blue... I'd say it's an injector issue. Probably O rings.

Blue smoke occurs when oil is entering the combustion chamber and is burning along with the fuel.

I don't think it's a turbo issue because I've seen the blow blue smoke when the shaft is broken, but they wouldn't be able to build any boost or power and it was certainly noticeable.
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Old 03-11-2008, 12:23 PM
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matt
'At those miles I would think injectors but you already replaced two of them and still get contribution codes for the new ones.'

you must be thinking of someone else. i haven't done this.

i was 'hoping' it was the o-rings. seems like the most straightforward repair (and cheapest). i got a quote for $160 done. doesn't sound bad but maybe i could get it done myself in a couple hours.
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Old 03-11-2008, 12:46 PM
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If you were serious about doing it yourself I can supply you with some links.

However - even though you can find help and instructions here you are ultimately responsible for what you do to your truck.

http://www.powerstroke.org/forum/7-3...r-removal.html

1999-2003 Ford 7.3L Powerstroke Injectors

Last edited by Marty; 03-11-2008 at 12:52 PM.
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Old 03-11-2008, 12:56 PM
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Quote:
Originally Posted by Maintain View Post
If you were serious about doing it yourself I can supply you with some links.

However - even though you can find help and instructions here you are ultimately responsible for what you do to your truck.
of course - these forums have helped me enormously in the past but i appreciate the limitations.

thanks. i would like to take a look at the method - in that way i could make a better judgement as to whether i can do it myself or not.

i know that if you have a bad injector, one method for diagnosis is to pull them one-by-one to see which one is causing the smoking. first of all, is there any particular way to do this and secondly, would this help to dignose o-ring problems or is it just prudent to change them all while you're there.

anyone else think it's injector related? the mechanico kept pushing a replacement turbo, but i am not sure about that.
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