How to clean a DPF
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- เผยแพร่เมื่อ 2 ส.ค. 2024
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Check out Pt. 2! - • How to Clean a DPF Pt....
In this video I'll show you the easiest and one of the most effective ways to clean your DPF (Diesel Particulate Filter). Air cleaning will remove some of the built up Ash only. This method will remove nearly all of the Ash, Soot and even other contaminants that may have gotten in there.
Detroit Diesel, Cummins, International, Caterpillar, etc. It doesn't matter. It will even work on light duty applications.
Hi Folks. Today I want to show you a cheap, easy and effective way to clean a Diesel Particulate Filter, or "DPF".
Now in this example I'm using a heavy duty Diesel Particulate Filter out of DD15. A Detroit Engine. Now here you see one of the DPFs. This particular engine used two DPFs working together in what they call a "1Box". The number of filters used or shape or size and anything like that doesn't really matter. The overall purpose of the filter is the same. It's there to trap and collect Soot from the Engine. Now we won't go into how to regenerate these filters or how they work that way, that's for another video. This is just about cleaning them when they've reached the end of their service life. When they're filled with Ash.
Now most manufacturers are going to recommend that you replace these filters. They're going to have exchange programs set up where you give them your dirty filter and they'll give you a previously cleaned filter that they've cleaned themselves. This usually costs a lot of money. Some manufacturers have authorized cleaning procedures that can be done at your local shop for example. Air cleaners are typically what's used. We've found that Air cleaning is not very effective. A lot of manufacturers are not getting away from that. They're not recommending it, they don't endorse it. Air cleaning leaves a large percentage of the filter plugged. You're not getting full flow through it after it's cleaned. Manufacturers are now starting to go to a liquid cleaning process. It's a little fancier than what I'm going to show you here but it's also a lot more expensive. What I'm going to show you now is very effective. We've had great luck with it.
And it really couldn't be simpler. We're just going to pressure wash the filters out. This method looks pretty crude and you wont find it in any manual from any engine manufacturer but it works! We've ran this by some of the head trainers from people like Cummins and Detroit and they wont go on record to tell you this but they'll give you a nod when you tell them that you're doing it.
You want to make sure not to use any chemicals or cleaning solutions of any kind. Just straight water. Heated water preferably. You also want to spray in the opposite direction of the exhaust flow to push the soot and ash back out the way it came. If you're using high pressure don't get too close to the cell walls. You don't want to damage the substrate or knock out some of the plugs at the end of the cells. You'll be able to see the soot and ash coming out the back side of the filter as you spray it. Just continue to spray until the water coming out of it looks relatively clean. Be sure to get the entire face area of the filter. The outside edges can hold a lot too. This method is also very effective at getting contaminants out of the filters. If, for example, you've had a ruptured EGR cooler and you've had coolant enter the system, you can wash it out. I have access to an air cleaning machine but it's to the point now where it rarely gets used. This is usually the preferred method. - ยานยนต์และพาหนะ
Thanks for the video...I went ahead and did this...First i boiled lots of water, i put the filters in seperate containers big enough to hold each..Then i poured the rolling boiling water in ,and sumerged both..Then after about 20 min i grabbed each filter and lifted them up and back down, swishing the water thru them..This got tons out of the filters..Next i pulled them out after about 45 min...Let them cool a little , and powerwashed them like you did..I did that for about 30 min, being careful to not go to hard and damage them.I then reboiled water and repeated this process the same way, and powerwashed again afterwards..They came super clean, i was very happy with the results .I then put them in the sun to dry..The next day they were reinstalled ,and everything is perfect..I driven about 10,000 miles since then ,and life is good, no problems..
Im having a hard time finding a turkey fryer near me to try this. Would love to see a boil clesn method. How is your truck running now?
Super Trucker! Just use a hose of water and spray it
@@davidb1089 Tell me more! Is it that easy to remove all the shit inside. I spent $540 to have a service bake it in Knoxville then another $200 for the ring kit.
Thank you for that post. Very helpful.
Wow, I'm going to try this myself. Did you use new gaskets? What type of truck do you have?
My dealer wanted $17k for a new DPF replacement.
I decided to clean it myself for $20.
Haven't had a problems thus far.
What type of truck do you have? How did you clean yours?
This explains why certain trucks with under 500k are going for $7k at auction. No power, and no dinero for new filter. DPF filter cloggs, dump whole truck at auction.
Wowww
$17k versus $20.00, Theses dealers are ALL crooks
Have you had any issues yet?
YUUUUUUUUUP, pretty much what EVERYONE has been thinking but were too afraid to try because these darn things are SO EXPENSIVE.
Thanks a lot for the backing it up with field tests and FACTS.
Dude, You are the Bomb. Thank you so much for clarifying this. I just did what you said and used my hot-water pressure-washer with a wide-angle tip and cranked back the pressure a bit [it is a 3500psi] to below 2500 or so and started cleaning very carefully. Dam if the whole cap popped right off and a ton of soot can out [They do a lot of short trips around town]. Did a quick Borescope and found no visible evidence of damage. Bought 2 gaskets and reinstalled the sensors. This is the fix.
Again thank you so much and my customer loves ya.
I've recently had a DPF issue on my Mini Countryman, and ended up cutting my filter open, performing a high temperature pyrolytic clean (in our self-cleaning oven no less...) and then pressure wash in the reverse direction as you have shown here.
By using the high temperature process first, it made sure all of the unburnt fuel in the filter was already turned to ash, (without chemicals) and making it much easier for the pressure washer to clean the remaining particles clean. thanks for sharing
does not that filter already go through higher temperatures in the truck than in the oven?
Hi Dieseler
Just to let you know that your Chanel is the first what I subscribed
Number One reason is your clear and understandable language
Second one is your simple and helpful videos
By the way I am diesel mechanic for decades so yours videos on YT are ones of the best what I’ve seen
Good luck in the future
yup, thank you for the idea.....have done this 2 times already to my 2013 Volvo d13...
works perfectly, just used high pressure clear water, no soap or any additives, and rinsed the dog in the opposite way of the exhaust flow...
let dry overnight, reset the dog service meter w a laptop, and good for 2 yrs and close to 500k km' each time I have done this...
only real cost each time are the gaskets and v-band clamps that need to be replaced...
cannot thank you enough for the video and the idea, saves a lot of money and time....
I just want to take the time to thank you I used your method to clean my DPF filter I also change a few senses I did exactly what you prescribed in your video and it is unbelievable how everything turned out my miles per gallon are back up and it cost me less than $400 and I did it right in my own yard before I clean the DPF filter and change 3 senses I was down to four point to miles per gallon when I really noticed I was having a problem my truck wouldn't go over 45 mph I used the ugly plug to get it home I used two days to do this because I wanted to make sure I was doing it right but it can be done in one day my MPG 10.7
+Delroy Leroy Wow, that's great news! Glad to hear it worked out well for you.
I am a retired CAT field service technician and i was doing this for years. Especially when customers wanted to save money and had the time to spend . Rather then be in a rush and use reman or new parts and Cat ET has provisions for telling the ecm you field cleaned the filters. That’s essentially what this is.
I appreciate your quick and knowledgeable response thank you so much please keep posting videos
thanks for taking the time to get these videos out
+Mario Slipac No problem. Give it a "Like"and share if you think it'll help someone you know.
We just did this to our 2012 peterbilt with the mx 13 paccar engine and this worked amazing! We kept getting egr delta pressure codes and power derates poor fuel mileage and regens all the time. We washed out the dpf filter and haven't had a problem since, our fuel mileage increased from 5 to 9 mpg! That's almost double of what we were getting. Thanks for this amazing video and information! It helped us alot! Subscribed!
Tom did you have to bake it at 1100 degrees like they say
Dennis Woods hey is it hard to remove the filter?
@@8mpgmafia109 I ended up paying someone to do it the traditional way. Never got an answer so I didn't mess with it
@@8mpgmafia109 No it was not hard to remove the dpf on our truck. Just had to take a shield off and unplugged some wires and split the dpf in half by taking a couple of clamps off. It usually takes us about 15 to 20 minutes to take it off. We also buy new gaskets for the dpf every time we take it out just to insure we dont have any exhaust leaks.
@@denniswoods4373 sorry it took so long for me to reply back but I never got any notifications from TH-cam. No we didn't have to heat it up or bake it. After washing we just blew it out with compressed air before reinstalling it.
Thank you for the info. My 08 is plugged up.
Thank you very much for this information. As a new with my own authority I have to be on a tight budget and my DPF needs to be cleaned.
I have a dd15 and will be doing this next week. I have new clamps and I have a pressure washer too. When I got my truck used (2018) Cascadia itd average 7.7 to 8.1mpg/a week. Now im lucky to stay at 7mpg. Im just under 400k miles. I hope my mpg's and power improves. Regardless this video alone will save me several hundred on the dpf service.
How’d it go?
Thumbs up! Thank you for being to the point. Well done!
I pulled mine pressure washed it put it back on worked great
I maintain a fleet of 22 trucks and this is excactly what I do to all of them . Before installing it back we blow the water off with compressed air and replace gaskets and clamps with new ones . Been at this company for 5 years and had no problems due to liquid cleaning .
with out proprietary software how do you update the dpf miles in the computer? cleaning is only 1/2 the battle- the light is still on unless you update the module.
every pound of diesel has soot in it. years ago it just went into the atmosphere, now we trap it, burn it, spray chems on it, then remove the filter, clean the filter and flush it down the drain into our water supply. besides making several new industries to either delete the dpf or clean it, what has been accomplished with all that crap the epa has mandated! another prime example of the fourth branch of government forcing crony capitalism down our throats.
That's a good and smart way to keep the DPF running, but when there's any broken and requesting replacement, we'd like to offer you the solution. We are Guangxi Huihuang Langjie Environmental&Tech Co.,Ltd. specializing in the Exhaust System, contact sales5 at gxljcatalyst.com whenever you need help.
YES, we have the DPF+DOC for Cummins 6.7L, you may contact me by mail to sales5 at gxljcatalyst.com, thanks
Anyone tried soaking first with caustic soda?
Thanks for the info. That will come in handy down the road in the future.
Do you have to wait for them to dry? If so how long? Or just rinse off then re-install?
Huh, this is the second video I've seen recommending pressure washing. Good guidance about not doing it too close to the channels to prevent over-pressure and damage to the cells.
Great video 👍thanks for sharing your knowledge!
Simple green and your method is best... Simple green is nontoxic and safe but does an excellent job of breaking down the carbons without hurting the filter system...
Yes it does worked.done this past wknd,with some Awesome. Cleaner from Dollar General..
That's the same way we do it. Works good. Got us another year out of a dd15
Bought a truck in a California emissions state it is a 2001 Cummins ISL it was retrofitted with a Johnson matthey Dpf/Doc, Deleted it since it is not required where I am. All I used was a garden hose that I bent to pressurize it. Tons of ash came out even after I had blown it out with water. Just want to make sure I have it ready if ever need be.
Used to do this on my truck never had a problem
I did this and it got a lot out but ended up getting a delete done. When they gutted it, I found out the back of the filter was clogged only about an inch. I could have drilled the clogged clogged holes out. It would be tedious but worth it.
neat - thank you for easy and cost saving method I will try this simple method on my 2011 freightliner - btw do I've to buy new clamps to reinstall the filters or can use the old ones please let me know Thank you 😊
For the record air cleaning is done in a puffer machine which does clean the filter if it was NOT OVERLOADED WITH PARTICULATE MATTER( PM) In this case the filter has to be baked for 8 hours at 1200 DEGS F then put back into the puffer to push the ash out.I have been working with DPF'S AND UREA since 2002 long before the Federal law in 2007.
hey crazy,how can you work on somethig that was not even around in 02??
He is correct wash opposite and using warm water!!! I been doing this for 4 years
jay r. Hi I'm planning to clean them this way. Have you had any issues like breakage or crack s. ?
Carlos Rivas ensure your pressure washer is on the lowest setting and 3 feet away before you do it. Flip dpf over so your cleaning opposite of exhaust flow.
Does it need a certain ( psi ) for the water pressure machine ? Cheers
@@nasseerismael4394 are you doing it in Dearborn
Will be attempting this soon on a 2011 International DuraStar. I read through the comments and have gathered some good info. Run a parked regen before and after, replace clamps and have the soot levels/dpf reset. My question however, is there a way to reset the soot levels/dpf on my own utilizing a laptop or other form of tool? Or is going to a shop my only option?
Thanks for being honest man. God bless!
Always!
Not sure how this is better then the cooking process they use now but was interesting. I suppose a private shop can do this. What the dry time on this before it can be reinstalled?
How long does it needs to dry before reinstalling? Is there a risk of damaging anything if applying heat (exhaust) before it dries?
After the clean up .. I have to plugged the truck to a computer or any specific program. I'm asking because I don't have neither of those, just want to know thanks and keep the amazing job
nice, appreciate it, how much pressure would u recommend??
I watched your video on how to clean a DPF filter with water and made the decision to try it for myself. Never done it before didn't even know what a DPF filter was until a week ago and found another video and how to break it down so that I can clean it and worked out great trucks driving nice and it was extremely dirty I learned a lot from the process appreciate you putting the video out there telling people that there is an alternate way to take care of this problem other than spending one two three thousand dollars so thank you for doing that I'm going to add my own video link to yours and appreciate it.
I want to add an update to my previous story and that is that after we change the filter I went on another trip and had more problems with my DPF. My DPF light went on but I was not able to regen at all.I was able to get to a mechanic before it went to level four and he found that all of the sensors were in the wrong position.now that the DPF was cleaned the sensors were receiving information that did not make sense to the information they should be receiving since all sensors were in the wrong positions the data they were receiving was also incorrect.the mechanic was able to move the sensors to the right positions and allowed the truck to go into regen process.I think cleaning the DPF was the catalyst that expose the real underlying problem of the sensors being in the wrong position since all of the sensors were able to receive information due to the unclogged DPF filter now the data that they were receiving did not make sense with the information they should be receiving.the moral to the story is make sure that all of the sensors are in the correct position before digging into more complicated Solutions says there's a good possibility that the DPF system was worked on prior with another owner or mechanic. This mayhelp you reduce your repair cost once you know that the DPF sensors are all in the correct position on the DPF housing.
Indy Med Valet
Hey how’s the filter cleaning doing now.
@@LimousineIndianapol1 no your truck is running like shit if you delete it you’ll believe me
I'm not sure what the substrate of the filter media consists of but I can't see why you couldn't pre-soak the dpf filter in a hot bath mixed with CLR or similar product to soften/loosen the carbon soot buildup then a short rinse with high pressure water. Another option I wondered for older diesels like mine without emissions and EGR is a simple steel mesh air filter like the same one used on the intake side to capture carbon soot particles, then wash it out at every oil change "B" service.
Hi ,.. Does it need a certain ( psi ) for the water pressure machine ? Cheers
Any insights on if this could work on a smaller car where the actual filter can't be removed in itself?
I would recommend ERC machines company machines in turkey. both suitable and good quality.
If you use this technique do you have to bake it like they say? If not how long do I have to wait to reinstall
GREAT TIPS!
awesome info! thx
No problem. Hope it's helpful!
Listening to the man here! More videos please!
I worked at international dealership and I serviced the doc and dpf. we used fsx air machine and I was quite impressed, I thought it did a great job. my opinion was it was stupid we collected the soot from the items then throw the soot in the garage. the soot ends up in the environment anyway. that still has to be way better than removing from water. I also thought EPA was stupid...... how is it illegal to idle more than 5 minutes but somehow good for the environment to run at 1200 rpm for half hour dumping raw fuel in the exhaust? bp and mobile must have designed after treatment system.
jeff westbrooke how much do it cost to have DPF cleaned at the dealership? I have a ProStar with the regen system
It doesn't work like this: Soot is caught by DPF and burned off either during heavy load or when engine enters regen mode. Soot is carbon, it goes into CO2 and flows out of your exhaust as a gas. What stays in the filter is ash - non-burnable solids that pass through your engine and come from oil and fuel additives, engine wear products or even very fine dust particles that make their way through air filter and get stuck in DPF. You get only tiny fraction of ash in your exhaust compared to soot, otherwise your DPF would get filled in no time.
Can this be done to any dpf filter and doc ?
I got 2010 maxforce dt medium bixtruck duty.
Little smaller
Hi The Dieseler. Thanks for video. DPF cleaning went well. Unfortunately Cascadia now not building air. Any advice greatly appreciated. Thx.
Thank you so much... you saved me today
Thank you for the video. I will do it tomorrow on the 2008 International bus I'm working on
how did it work out?
@@nunyabizness3382 it work great. Thanks for the video. Since seeing your video I've done with 2 more buses. Bus still running with no issues. Our other shop have an oven to bake it but after a few months the bus came back with same DPF issues. Since I did what you showed on the video, the buses never have anymore problems. Thanks again.
How strong of a pressure washer are you using and what angle tip? This was good information and thank you for sharing!
Honestly, I'm not 100% sure of the pressure washers specs. Glad I could help otherwise though.
Whats the psi we should use on presure washer?
Can we also do the DOC?
Thank’s for your video sir it really helped me a lot
No problem. Glad to hear that!
check out my video how to clean dpf filter using a vacuum
Good stuff. Thanks.
I really enjoy your videos please continue posting shouldn't this be done as a preventive maintenance before the check engine lights start coming on and what would happen to the sensors will they reset also I always wondered what would happen if I pull them out and drill couple holes through the filter just curiosity thank you
+Crystal ojeda Thanks a lot. The filters are a maintenance item. At least in a Detroit, it will set a fault code telling you when they need cleaned based on the duty cycle that engine has been running. Milage and hours are not good factors to judge how plugged they are since no 2 units run the same. The engine ECUs will monitor things like fuel used, etc to determine when they need to cleaned. The fault code that sets will not derate horsepower unless it is indeed for too long. After they're cleaned, the ECU needs to be told to reset the count. Much like an oil life monitor in a car. I've heard of people being able to drill holes in older models and get away with it but I really don't think it would work on anything from at least 2010 and up. These ECUs are very smart and are constantly running diagnostics to make sure everything is working just as it should. After 2017, soot sensors were introduced to really put a stop to things like that.
Love it!!!!
My first DPF car was a 2001 Peugeot 406 HDi. I've had two others (not Peugeots) since and so far no issues. Possibly just luck??
How do you get around the service life monitor that is linked to serial number on some of these filters?
How long do u have to wait for it to dry
I took it mine apart and blew water threw it from both ends and it worked
I just change them as a service item. I don't pay for them so I'm not bothered plus you get new clamps and seals in the kit. I even use the installing tool because I don't have 3 hands lol.
Good viewing if you are on a budget
How long should you let them dry?
Thank you for the video. How to dry them after and if you can make a video how to get it out off Volvo 2020
to TheDieseler
where can I bring my truck to get this procedure done?
2015 freighliner cascadia evo dd15
Does a manual regen need to be done after cleaning?
What affects did y’all trucks had with dpf messed up ?
thanks so much for the video very helpful . i did the same as the video . after the black ash came out i noticed so brown or dark orange color started coming out also. just asking myself did the filter got damege or some ?????????
You will get orange coloured particles come out it’s where these DPF filters get redhot trying to regenerate
it turns the ash to an orange colour if orange coloured water came out that’s a good sign you are flushing it out!
Do I need to do something with the truck computer to install them back like program the ecu? Ecu remaps
For a Nissan Pathfinder 2011 i can use this procedure?
How often do you have to do it?
What is the pressure of water ? What is the range of pressure that we can use for cleaning?
I need to solve the usage on diesel I also need to know how to go about
I have a question about residual water that may be left in the filters! I guess you could blow some out with compressed air, but these filter look to be very deep (long) so even after blowing them out with air would still leave a LOT of moisture within the internals of the filter, do you let them dry out for a period of time before installing them? or do you just mount them back on the truck and let the exhaust heat dry them out?
Why hasn't anyone suggested using your oven to dry it out? If it can handle high heat cleaners, why not a house hold oven cranked up for 2 hours??
Will the same process apply to a tractor DPF?
Will this work on JD particulate filters?
I'm not a tree hugger by any means. But seems kinda silly that we can't have the soot in the air but we can wash the soot out of the filter into the water systems......lol makes perfect sense. Still ended up into the environment just took more steps to get there.......enginering at work. Just my 2 cents
Jamie Prentice Soot is trapped in the filter and then converted. What you're seeing washed out is Ash. There's a LOT less of it but, you're right, it's not very good for the environment either.
every pound of diesel fuel has pollutants the epa does not like. we used to put them into the air straight away, now we have an entire industry to build computer controlled boxes to trap and incinerate these , but once they are full we wash the "concentrate" down the drain and call that progress.
Its just a way to get people to buy more parts for there car.
The whole point is to put it where it cannot be inhaled.
Jamie Prentice true, and here in Australia with DPF’s end emission laws over the last 15 years we have seen an increase of over 200% in melanomas. This is from a professor at Westmead hospital. Particulate may look bad, but it’s one hell of a UV filter.
Thank you!!!!
I’m just going to build a custom set up using a hot water heater, collection drums, filters, etc. And make sure it’s legally disposed off. Haven’t done any reading on exhaust particulates disposal.
Reverse jet wash.. works a treat.
Do you have a video on how to remove it
Dann I thought I was the only one that does this, this method works really well but I also use dawn dish deturgent
Tony Mullins I wondered if that would work. I’m gonna try that tomorrow
Nathan Sutton yeah it works i do it all the time
Idk about the dish liquid but straight cold water pressure sprayer for a few hours and mine went 76,500 miles before I had a stopped regen. About to do it again.
Hi has anyone thought of using caustic soda to soak it first?
Tony Mullins can regular guy with limited mechanical understanding do this correctly? Also main question, how long u can keep cleaning and using same dpf?
Thanks a lot!
Boil them in turkey sized fryer tubs. Light the fire and walk away. 1.5 hours med. heat or light boil.
Dinner is served
@@shopcrate5687 🤣🤣🤣
Tastes like chickin'!
Can you spray them both ways?
It’s also a good idea to pressure wash your egr
How is this done? Remove the parts from the engine? I've watched videos on rebuilding turbos and it looks cheap and effective.
I think this is what I’m going to do.
I just bought used a Takeuchi 8. The DPF is thoroughly clogged. The machine is throwing a code and won’t stay in Regen. I bought the machine to be a beater, not my primary equipment. I expect it would cost minimum 3G to have it done professionally? If not more?
So power wash it and put it back in and that’s it? Should I expect it to stop throwing a code automatically or run regen?
Great vid.
After cleaning them how did you dry them?
How do you get how water to use in a pressure washer?
how long dose it take to dry and any methods you use to dry it i hurd cobra clean helps also
+orlando villa I tend to let them sit overnight if time allows for it and flip them periodically. If time is tight I still try to give them a couple of hours in front of a fan. I've never tried Cobra Clean so I can't really comment on it.
Will this work with the SCR filter?
I don't understand how a DPF saves the environment. If you remove it the particulates fall to the ground, they are heavier than air. If you clean it the particles go down the drain. If you replace it the particles go to the landfill. One way or another it all ends up back to the Earth.
Is there a alternative gasket to use when having to properly seat filters that have been installed improperly? Im going to try and readjust them since i see soot, but want to reuse rings since i just bought them. Is there hvac tape that can act as a new gasket?
These filters see 1100 degrees. I wouldn't recommend using anything but the seals that are intended for them.
Hi does this method also apply to Mitsubishi Pajero DPF? Thanks
i clean these professionally. we do tests before to make sure the dpf passes various tests before hand. we use a blast cabinet to blow out as much particulate as possible then move it to a high pressure water and air flush station. then again to the blast cabinet to blow out as much moisture as possible then proceed to bake the dpf for 12 hours at 1100 degrees Celsius. after all that we move it to the blast station again to get the final particulates out. our cleaning method cleans 99% of contaminates in the dpf or doc.
What psi are u using?
HIGH VALUE INFORMATION RIGHT THERE !! FREE TOO !!!
God bless you, thank you
This guy smokes
@@melvin5818 what do you mean?
What if it cracks during washing
TheDieseler Is it okay to use little bit of dish soap? Don't you think it will remove soot easier?
+Sergiy Vlasenko I wouldn't risk it. Mostly because it would find its way downstream into the SCR system. In reality though, both it and the DPF rely on chemical reaction to function properly. I wouldn't risk introducing anything like that into them just because of the slim chance it could interfere. There's also the chance it could harm NOX sensors. Cummins has even Incorporated a shield to protect the Outlet NOX sensor from getting soap on it when cleaning the truck.
How much pressure should be on pressure washer, so can't damaged filters
one problem for the backyard mechanics. you still need proprietary software to get in the exhaust management computer and update the clean/replace dpf miles or the light will not go out. also when you reinstall the dpf you need to lead/asbestos wrapped clamp so it will reseal when it gets hot. failure to replace the clamp will give a leak inside the one box. and then you get a dpf pressure diff code. if the code comes up to clean the dpf you can still go 10k-15k miles with the light on. engine will not shut down.
forgot to mention , perform a parked regen before removing the dpf's. when u have the dpf's out write down the dpf serial numbers. you will need those numbers when you update the exh management computer. also inspect the dpf's close. any crack or meltage on the surface of the substrate - they are junk. no core, not reusable. there should be zero, zilch, nada, no soot on the outlet side at all. have a dozen 1/4" fender nuts and 1/4 x3/4" bolts in the tool box because you will need them.
+First Name For Detroit's, this is all true. Like I've written in other comments though, resetting the Ash Accumulator is literally a 1 minute job. A shop will still charge a fee for it I'm sure, but it shouldn't be much. As for the clamps and seals, it sucks but they can be quite expensive. I definitely wouldn't try reuse them though.