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this one can go either way, stock or mod forum but im putting it here, i pulled up next to a brand new 450 merging on the freeway in SLC today and i got on it a little and the guy in the 450 kept up, he finally passed me and when i was behind him he romped on it and a pretty good amount of black smoke came out, about the same as my powerpup on 40%. ive only driven an 08 f350 with the 3.73 once and it was pretty quick i guess but this guy was moving, i dont know if he had the 4.30 or 4.88 and i dont really have an idea how much more passing power they have but could he have been testing a chip for someone, he was an out of state guy? or is his dpf not working right? or is there some middle ground, i thought the dont smoke AT ALL but i guess i could have been mislead? thanks all im just kinda wondering what everyone else was thinking.
 

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More than likely his DPF is not working properly. My F450 is makes smoke every time I accelerate.
 

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[quote
Hard acceleration or just normal?
Nate

[/ QUOTE ]

My F450 has been attached to a goosneck trailer for months now. Everywhere I go I'm towing at least 11,000 lbs, usually 19,000 lbs, and every so often 24,000 lbs. So all acceleration is medium to hard. I did have a mechanic drive it when I had it in for a PCM replacement and noticed when he drove by there was a tiny bit of black smoke coming out during light acceleration. The harder I accelerate the more smoke that comes out. It is only during the the first couple of seconds during acceleration that it happens. Once it knows it is going to continue accelerating it seems to quit smoking.

By the way I am very impressed with its towing capabilites. I went up a 7 mile long 5% grade towing 11,000 lbs today at 63 mph. The truck stayed in Overdrive all the way up and was not straining at all. Towing 24,000 lbs on this same hill results in 40 mph max speed and the truck is definitely straining, but still impressive.
Marc
 

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ford replaced my DPF truck runs better and is getting better milage just returned from a 1300 loop empty got 17.6 over all
 

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[ QUOTE ]
ford replaced my DPF truck runs better and is getting better milage just returned from a 1300 loop empty got 17.6 over all

[/ QUOTE ]What made the dealer lean towards a malfunctioning DPF?I noticed today my truck emits a good amount of black smoke when accelerating and between the first few shifts,when I have the truck loaded.I had some codes stored in my computer last week.The dealer pulled them and spoke with ford.They told the tech to reset the back pressure limits???.I do know the light hasn't gone on again.Also today when It went into active regen at stop light,my rpms went up to about 1100,even with foot on brake???The truck feels like it is running OK.What do you think? /ubbthreads/images/graemlins/shrug.gif
 

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[ QUOTE ]
[ QUOTE ]
ford replaced my DPF truck runs better and is getting better milage just returned from a 1300 loop empty got 17.6 over all

[/ QUOTE ]What made the dealer lean towards a malfunctioning DPF?I noticed today my truck emits a good amount of black smoke when accelerating and between the first few shifts,when I have the truck loaded.I had some codes stored in my computer last week.The dealer pulled them and spoke with ford.They told the tech to reset the back pressure limits???.I do know the light hasn't gone on again.Also today when It went into active regen at stop light,my rpms went up to about 1100,even with foot on brake???The truck feels like it is running OK.What do you think? /ubbthreads/images/graemlins/shrug.gif

[/ QUOTE ]

Take your truck to the dealer!!!!!!!! 1100 RPM's with your foot on the brake is not good and definitely not normal. Black smoke is also not normal.

It sounds like Ford is resetting the backpressure limits to a lower level to compensate for a cracked/damaged DPF. The DPF is there to filter the soot, so as it gets filled with soot, the pressure will be lower, because some of it is passing through the crack/damage. I'm not sure why they would opt to regen earlier but who knows, it's just a theory.
 

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[ QUOTE ]
If I take it to the dealer,and it doesn't have any codes set,what are they going to do??

[/ QUOTE ]

Probably send you home... but the point is, if it's smokin', it's broken. At least it will be logged in the system as a complaint, so if parts fail at a later date, it's logged.

I'd also take it to a different dealer than the one you previously worked with. These DPF's just aren't supposed to pass so much soot that you can see them smoke. Is your tailpipe clean or black? I'll take a picture of mine at 7500 miles. It still looks like new, with some dirt on it. No soot buildup at all. The inside looks just like the outside.

Edit:

Oh yeah, and the truck isn't supposed to hit 1100 RPM's while in "drive" with your foot on the brake. If my truck hit 1100 rpm's while in drive, the truck would be trying to lunge forward. This is dangerous. The dealership should definitely look into this.
 

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[ QUOTE ]
[ QUOTE ]
If I take it to the dealer,and it doesn't have any codes set,what are they going to do??

[/ QUOTE ]

Probably send you home... but the point is, if it's smokin', it's broken. At least it will be logged in the system as a complaint, so if parts fail at a later date, it's logged.

I'd also take it to a different dealer than the one you previously worked with. These DPF's just aren't supposed to pass so much soot that you can see them smoke. Is your tailpipe clean or black? I'll take a picture of mine at 7500 miles. It still looks like new, with some dirt on it. No soot buildup at all. The inside looks just like the outside.

[/ QUOTE ]My tailpipe has a good amount of soot!
 

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I think I may be changing my tune about having a coating of soot on the insides of the exhaust outlet. I've been noticing a guy that has a 6.4 around town, and for two months now, every time I see it going by, the pipes are squeeky clean. This leads me to think maybe either Donaldson hasn't quite got the quality issue down with DPF dependability or prolonged efficiency--or Ford/Navistar's regenerations are not quite tuned right yet and are eating the DPF's guts out. (Nice technical description, yes?) /ubbthreads/images/graemlins/crazy.gif

I think now I will subscribe to the "if it soots or smokes, its got a wrench in the works" belief system.

Im a recovering "some black soot is ok" addict.
 

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[ QUOTE ]
I think I may be changing my tune about having a coating of soot on the insides of the exhaust outlet. I've been noticing a guy that has a 6.4 around town, and for two months now, every time I see it going by, the pipes are squeeky clean. This leads me to think maybe either Donaldson hasn't quite got the quality issue down with DPF dependability or prolonged efficiency--or Ford/Navistar's regenerations are not quite tuned right yet and are eating the DPF's guts out. (Nice technical description, yes?) /ubbthreads/images/graemlins/crazy.gif

I think now I will subscribe to the "if it soots or smokes, its got a wrench in the works" belief system.

Im a recovering "some black soot is ok" addict.

[/ QUOTE ]

Glad to hear you've seen the light, heh heh heh...

These trucks are so brand spanking new, I'd go with the first theory: the filters are either broken as shipped, or made wrong in such a way that they're physically breaking apart under the vibrations of being run just a short time. If the guts were not sealed properly to the case, for instance, you could pass a lot of soot through the gaps.

Duncan
 

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My F350 is smoking more than my '97 7.3L I had it in the shop a week ago, and they had no diagnostic procedures for the DPF, but I convinced them to order one, since my tail pipe is black, I have lots of smoke, and I have very frequent regens. I have not heard if the DPF is in yet, I picked up my truck because they said it may be a several days before I can get one.. Ill keep you posted on what happens. I hope that with a new DPF I get better mileage like the above post said. But regardless of any of these issues, this is an AWESOME truck!! hands down..
 

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MY truck smokes so bad at acceration when Im towing, that once was next to a guy with his window down and it totally smoked him out.... UGH... The dealer Doesnt believe me! Im going to call and tell them I want a new DPF.... we will see what happens. Lisa
 

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[ QUOTE ]
[ QUOTE ]
If I take it to the dealer,and it doesn't have any codes set,what are they going to do??

[/ QUOTE ]

Probably send you home... but the point is, if it's smokin', it's broken. At least it will be logged in the system as a complaint, so if parts fail at a later date, it's logged.

I'd also take it to a different dealer than the one you previously worked with. These DPF's just aren't supposed to pass so much soot that you can see them smoke. Is your tailpipe clean or black? I'll take a picture of mine at 7500 miles. It still looks like new, with some dirt on it. No soot buildup at all. The inside looks just like the outside.

Edit:

Oh yeah, and the truck isn't supposed to hit 1100 RPM's while in "drive" with your foot on the brake. If my truck hit 1100 rpm's while in drive, the truck would be trying to lunge forward. This is dangerous. The dealership should definitely look into this.

[/ QUOTE ]

I had a truck that would idle high and it was hell on my brakes and difficult to stop at times. This can't be good.
 

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[ QUOTE ]
[ QUOTE ]
[ QUOTE ]
If I take it to the dealer,and it doesn't have any codes set,what are they going to do??

[/ QUOTE ]

Probably send you home... but the point is, if it's smokin', it's broken. At least it will be logged in the system as a complaint, so if parts fail at a later date, it's logged.

I'd also take it to a different dealer than the one you previously worked with. These DPF's just aren't supposed to pass so much soot that you can see them smoke. Is your tailpipe clean or black? I'll take a picture of mine at 7500 miles. It still looks like new, with some dirt on it. No soot buildup at all. The inside looks just like the outside.

Edit:

Oh yeah, and the truck isn't supposed to hit 1100 RPM's while in "drive" with your foot on the brake. If my truck hit 1100 rpm's while in drive, the truck would be trying to lunge forward. This is dangerous. The dealership should definitely look into this.

[/ QUOTE ]

I had a truck that would idle high and it was hell on my brakes and difficult to stop at times. This can't be good.

[/ QUOTE ]Here's a update,I had 2 active regens yesterday.I drove the truck for about 300 miles today.Not one bit of smoke,I just don't get it?The other day,it smoked all the time during acceleration
 
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