Hey Folk's,
I just bought a 2008 f-350 lariat DRW 4x4 it has 80,000 miles on the clock.
I've had the truck about a month now. I'm totally new to the diesel truck and reading up on these forums has got me kinda nervous lol. It runs great the guy that had it before me used it to pull a big 5th wheel all the time. I've noticed that the tail pipe is kinda black, I was curious if the DPF might need manual cleaning is there any way for me to do this my self?

 

no way to do manually initiated regen by owners.

Sam

 

I was wondering if you can take the dpf off the truck and clean it not initiating a manual regen

 

there is currently no service to do that. Technically it is possible, but the temps, and process are way above what typical users could do.
(cause the residue is stuff left over from 2,000 degree fire in the dpf)..

there was discussion here a while back that the equipment startup might be 100k or more.. so this would be a long term return on investment business..

Sam

 

I would not bother trying to clean or service the DPF unless a couple of things happen.

first one being frequent regens...other than what you normally have (go off of history from the guy you bought it from)

Secondly if you fail emissions...then the DPF is covered for 08 Model year to 100K.

Or you are growing oil...then maybe you have an injector issue or something.

Or...you are eating coolant...then it should be white smoke and coolant loss.

So in short if it runs good and regens are where they should be...drive the truck and don't worry about it.

 

It runs great the only thing is that after 45 miles on the highway the wrench flashes the stays on but when i turn the truck off then back on it goes away, I brought it in to read the code and they said it was a overspeed... the mech said i drove it too fast, that being said i slowed down and it still does it after 45 miles or so.I regen every 60 to 150 miles.

 

sounds like you have the faulty 11b23 flash on your truck, which had the overspeed detection. I'd have them check and reflash.. its free.

overspeed, over full oil, over turbo.. a bunch of other checks were added by 11b23

Sam

 

I agree...or a faulty VSS. Get a reflash...there will be codes so it should be free. BTW..attached is closer to what your pipes should look like

 

Thanks Guys ill bring it in and get a re-flash... my pipes are a bit darker than those in the pic they are slightly black.

 

I was reading on another forum one poster took off his DPF and pressure washed it since he was getting regens every 60miles or so. He said he had a 1/2" layer of soot caked up inside. Last I read, he's back to well over 200+ miles per regen. Big difference here was, he was running a DPF-on tuner prior to all of this.

Regardless, I guess it wouldn't hurt dropping off the DPF and periodically blowing it clean with an air compressor. It wouldn't be much different than emptying out a vacuum cleaner bag.

 

Another thought to the balck exhaust. Since it's an 08 figure that low sulfer diesel had been used because ULSD was not always available. If your DPF had ever been changed you will always see dirty pipes, you can clean them but they won't be as shiny. And if your DPF is cracked leave it, I lost 15% on my mileage as soon as my DPF was replaced. My truck is used to pull my 5th wheel, it's an 08 450 I see regrens every 60 to 75 miles and I expect my DPF will not make 100,000 because of that.

 

When your truck is scanned at the dealer, if it shows a partial restriction in the exhaust, they can do what is called a 'manual regen'. The computer is left hooked to the obd II port and the regen process is started. The truck's fan turns on and the engine revs up to about 2800 rpms. There is a lot of heat generated by this. The total time to have it done is about 40 minutes. The cost was $75 at my dealer. Had it done to my work truck last week.

 

Just brought my truck to a different dealer, They Scanned the codes and the p0012 and another code(for the life of me can't remember the other one) came up and they told me the EGR cooler valve is sticking open every once in awhile thats the reason it kept clearing the code when the truck was turned off. I'm on a waiting list since there is only one diesel tech at that dealer, but he's a real good mech ( I know him personally). about a week wait, good thing i bought the ext ford warranty. He's going to replace the egr cooler and the DPF.

 

You mean he is going to replace the valve..not the coolers. Should take a couple hours max.

updated valve will not have a coolant line going to it.

 

They said they will have to take the cab off so I don't know if they have to change other stuff... He also stated that the engine oil temp and the coolant temp had too much of a difference between the two, and that the engine was running a bit hot. On a side note senix, do the updated egr valves suppose to be much better? I just want them to fix the stuff wrong so i can get back to camping haha.