2002 Ford F250 7.3 Blowing Black Smoke

Topic: Black smoke on diesel,is this normal?

Posted By: wildwood32 on 08/15/10 04:24pm I am fairly new to the Diesel to 5ver thing.Just took a long 15 hour tow and it was 96 degrees out.On the way back home I noticed that I would blow black smoke out the exhuast when I pushed it to go up hills,it did it for a couple of seconds and then it was fine.I never looked so don't know if this is normal.Also it does it empty but only if I run the trucks air.If the air is off then it doesn't smoke at all.With air on she smokes,when towing and air off not very much,with air on much more smoke,it just seems to all be connected with the air.Its a 06 F250 with the 6.0 psd.Just wondering if its normal for this motor or not?

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Posted By: Turtle n Peeps on 08/15/10 04:37pm All pre DPF diesels smoke. How much they should smoke is very subjective and depends on many things.

If you can see lots of smoke out your rear view mirror with your 6.0 I would say something is wrong.

First place I would check is your air filter. Is it new?

Next place I would check is the VV turbo. The 6.0 is infamous for sticking vains on the turbo.

How is the boost pressure?

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Posted By: wildwood32 on 08/15/10 04:40pm Well the airfilter gauge says its good,the boost will go up over 20lbs if I push it real hard from a takeoff.It only does it with the air on.Don't know if it has anything to do with it or not.

Posted By: 4*phun*2 on 08/15/10 05:21pm I have had an 03 and an 06 6.0l PSD. Never had any black smoke in either. What kind of oil are you using?

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Posted By: ib516 on 08/15/10 05:23pm I'd say you have a turbo issue. Black smoke is unburned fuel. Diesels will blow black smoke when there is a lack of boost, or an abundance of fuel.

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Posted By: ricatic on 08/15/10 05:26pm Your 6.0 should not smoke much if at all. How long has it been since the egr valve was cleaned? I recommend you visit the Ford Truck Enthusiasts site and look at the tech folders in the tech section. The tech section can be found at the top of the listings on the 6.0 forum start page.

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Posted By: wildwood32 on 08/15/10 06:54pm Just had a new egr valve a couple of months ago....New injector module installed,could this be maybe something to think about.I have plenty of boost if I need it and it runs just fine,other than the smoke when the airconditioner is on.

Posted By: Mr_MrsSchlepprock250 on 08/15/10 07:31pm is this truck new to you?,if so maybe the PO had a chip installed.Just thinking here...also,black smoke could equal high EGTs,so be careful...

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Posted By: bstark on 08/15/10 07:37pm My thinking would be; the only effect the A/C would possibly have would be more H/P required when it's on but that alone shouldn't make enough of a difference to initiate black smoke episodes, would it?
If what is happening is black smoke right at the instant you put your foot in it with the A/C on I can see a bit of turbo delay in spooling up causing an instant of soot but it should clear quickly once your turbo guage shows boost climbing. Is this correct?

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Posted By: RGordon on 08/15/10 08:49pm My 07 F350 6.0 never smokes and see close to 30 psi of boost at times when towing on hills or take-off. If it has a programmer, that will make it smoke on extreme power modes due to more fuel.

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Posted By: chili7 on 08/15/10 09:05pm My stock 05 PSD almost never smokes. I do get some white smoke when starting in very cold weather, which is unburnt fuel. I can't remember seeing any black since ULSD became common and boost to near 25 psi is common. I'd check out the FTE site also. It's the best Ford site out there IMHO. You might also look up Blackstone and get an oil analysis done. They will provide a detailed report that can help pinpoint the issue, if any.

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Posted By: Trailin It on 08/15/10 09:35pm You should be building more than 20lbs of boost.
Is this a new truck to you? Or is this a new issue?

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Posted By: wildwood32 on 08/16/10 04:45am I can get over 20lbs of boost and the truck I have had almost a year,I don't believe its chipped,don't realy know.Its not a lot of black smoke just more than I ever noticed before.

Posted By: frank-2 on 08/16/10 05:04am I had the same problem lots of smoke I have a 2004 GMC and my problem was the injectors and they were under warranty extended warranty and they replaced them all and my problems was over and it did not cost me one cent something to think about
frank-2

Posted By: Trailin It on 08/16/10 10:51am If it is a stuck injector it should be blowing smoke at idle too. When you had the other work done did the dealer put a new program on your computer?

Posted By: camping man on 08/16/10 01:58pm My 05 Cummins will smoke them out behind me when I get on it after being in slow traffic. It has since new, and it's stock with 80k on it now. Unless you have a DPF, the smoke has to exit the tailpipe somehow, a cat. won't capture the carbon.

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Posted By: mtofell1 on 08/16/10 11:05pm My pre-DPF Duramax smokes like all hell now and then... as mentioned above, usually after sitting in traffic or idling for awhile. Also, if I really punch it and there is a bit of turbo/transmission lag it will spit out a big (sometimes HUGE) puff of black smoke.

Those that never see smoke I'd guess never put their foot into it much or just don't happen to be looking back when it happens. It does happen quickly.... I actually watch for it when I suspect it might happen.... not sure why - I must be bored [emoticon]

Posted By: clewsew on 08/17/10 08:06am

mtofell1 wrote:

My pre-DPF Duramax smokes like all hell now and then... as mentioned above, usually after sitting in traffic or idling for awhile. Also, if I really punch it and there is a bit of turbo/transmission lag it will spit out a big (sometimes HUGE) puff of black smoke.

LOL, I look back too...I love it...must mean there is still some kid in me... [emoticon]

Posted By: Bluhorn on 08/17/10 08:21am

I noticed this on my Dodge Diesel too,under these same conditions.I do not "punch it" often,but the other day as I pulled out onto a main road, another car came flying over the hill at me and I needed to pick up speed fast.I floored it and was shocked at the black smoke that poured out of my tailpipe.Felt the Turbo Lag too.Once the turbo spooled up it took off like He**.When you punch it,the injectors open up and dump fuel in there and the turbo has not had the time to get up to speed and ram the correct amount of air in it.The smoke should clear up quickly.

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Posted By: Tystevens on 08/17/10 10:33am My '06 Duramax smokes on occasion. Mostly if I haven't put my foot into it for a few days (unloaded, I usually drive like I have an egg under my foot, seldom gets above 2k rpms. But sometimes on a freeway on-ramp or something, I like to cut it loose for a few seconds!). It isn't a huge black cloud or anything, just a little visible grey/black smoke. Just blowing some soot out, as mentioned above. Towing, though, it gets opened up enough that I haven't ever noticed any smoke, even under heavy throttle, after I've been going for a bit and everything gets blown out.

I'd guess that if you have smoke after the engine has been pulling a load for a while, you have a problem; if it smokes a bit at the beginning, probably nothing to worry about. Good luck!

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Posted By: RollingRockTX on 08/17/10 10:54am sounds like a stuck ERG...

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Posted By: future5ers on 08/17/10 02:49pm I don't know what could be at issue with the non-semi diesels, but as a semi driver in the West, I see this a lot, especially in the mountains. In a class 8 diesel, excessive black smoke generally indicates a bad injecter or a problem with the fuel pump. I have been subjected to the effects of those that think boosting their small diesel engines to or beyond factory specs is something "cool" with all the smoke spewing out the tail pipe. On a couple occasions I've had to wait at intersections while the smoke cleared so I could safely go through. White smoke generally is an issue with oil laying on top of a piston or laying inside the turbo.

Posted By: OH48Lt on 08/17/10 03:05pm A 6.0 PSD that is not chipped should not smoke. Check air filter and turbo operation, to start. Don't trust that little gauge on the air filter. Also get the latest engine programming update, TSB 09-24-4. It can be installed under the 80K emissions warranty. Among several other running strategies, it moves the turbo vans once in a while to make sure they stay free. Also, it should make more than 20 lbs boost under heavy load, 25-28 is normal. Watch those EGR's if you're smoking.

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Posted By: wildwood32 on 08/17/10 05:24pm Again it only does it when the air is on.Without air on it only smokes a tiny,tiny bit when I'm pulling the trailer,with air on it will smoke more,its not like I can't see behind me but it is noticeable.It has a new egr and the turbo will produce over 20lbs no problem,I did stomp on it with the trailer and I did see around 25lbs or so...I might just be paranoid and was wondering if anyone else has noticed this..

Posted By: RollingRockTX on 08/17/10 06:53pm

wildwood32 wrote:

Again it only does it when the air is on.Without air on it only smokes a tiny,tiny bit when I'm pulling the trailer,with air on it will smoke more,its not like I can't see behind me but it is noticeable.It has a new egr and the turbo will produce over 20lbs no problem,I did stomp on it with the trailer and I did see around 25lbs or so...I might just be paranoid and was wondering if anyone else has noticed this..

yeah nice point, wonder if some fan clutch is not fully engaging thus causing the PCM to over power and over fuel the system.

What I would do is jump on over to The Diesel Stop and let the Ford guys better assist you.

Posted By: ACZL on 08/18/10 11:50am wildood32,

Sent you a PM.

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Posted By: barrelslime on 08/19/10 01:24pm Sounds to me like there is nothing wrong with it. I do agree, its probly been electronicly tuned if its making any smoke.

Posted By: wildwood32 on 08/19/10 01:53pm Yea,I'm starting to think I was paranoid,it runs like a champ so I'm believing that I was just paranoid as I'm not used to diesels and never owned a diesel before..

Posted By: 45Ricochet on 08/19/10 02:52pm I think most pre DPF diesels smoke to some degree. I wouldn't worry to much.

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Posted By: frank-2 on 08/22/10 09:18am Well I don't know what to say except I know when I bought my diesel it did not smoke so when it started smoking I knew something was wrong so I got it fixed I do not believe that they should smoke especially a lot that's just my two cents
frank-2

Posted By: StirCrazy on 08/22/10 10:09am

wildwood32 wrote:

I am fairly new to the Diesel to 5ver thing.Just took a long 15 hour tow and it was 96 degrees out.On the way back home I noticed that I would blow black smoke out the exhuast when I pushed it to go up hills,it did it for a couple of seconds and then it was fine.I never looked so don't know if this is normal.Also it does it empty but only if I run the trucks air.If the air is off then it doesn't smoke at all.With air on she smokes,when towing and air off not very much,with air on much more smoke,it just seems to all be connected with the air.Its a 06 F250 with the 6.0 psd.Just wondering if its normal for this motor or not?

sounds normal to me. when you push it up a hill it is probably when the rpm's dropp off and then you feed it more fuel right? what is happening there is as your rpm's get lower tyour turbo also spools down a bit reducing the air to the engine. now you put more fuel in befor the turbo can spool up again and you get black smoke. this shoudl clear up or get better anyways as the rpms pick up, if you flooring it and not speeding up then you need to drop another gear.

if you have a programer or after market injectors ect.. this will be even more noticable. I get a good puff of black which lightens to a slight grey haze as the turbo catches up.

Steve

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2002 Ford F250 7.3 Blowing Black Smoke

Source: https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/24288696/print/true.cfm

2002 Ford F250 7.3 Blowing Black Smoke

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