WARNING! Service Emissions System! Speed Locked Out! DPF Forced Regeneration 6.6 DURAMAX L5P
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- Опубликовано: 5 окт 2024
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I'm an old hotrodder from the early 1970's that drag raced MoPars and know nothing about diesel engines. That was really interesting how the soot is burned out of the system. I learned something new today! Thanks Rainman Ray and stay as positive and honest as you obviously are! You're a great wrencher and diagnostician.
It’s garbage! It will destroy the engine due to back pressure. I have done lost a semi because of that. The filters cost $5k-$10k to replace when they get fully clogged to a point where they can’t be burned out.
@@bizkit81 that's why I'm a company driver lmao
they capture the soot, so they can burn it with more fuel. makes zero sense, burns more fuel just to make the exhaust cleaner "looking", at the expense of burning more fuel overall....
@@chubbysumo2230 filter catches soot, truck burns off soot with fuel and uric acid and spits it all out of the tailpipe, into the atmosphere...
@@chubbysumo2230 only thing coming out the tailpipe is carbon dioxide, hydrogen and nitrogen.
DEF is a mixture of urea (32%) and distilled water. Urea is also a low cost nitrogen fertilizer (a main ingredient in Miracle Gro plant food).
It is indeed, and the only output from the tailpipe is nitrogen and water vapour. It's a shame to hear Ray repeating misinformation which commonly circulates among some opponents of pollution controls measures (which I do no contest cause extra expense to owners, speaking as somebody who suffered a clogged DPF).
I was just going to mention the excellent video, but as an organic chemist I was going to correct the part about DEF. Looks like people are already on it. While I don’t need the chemisty lessons, I’m happy to trade chemisty lessons for diesel engine lessons so I can keep my 2018 Silverado 3500 in tip top shape! Again, great tutorial! 14:37
You should hear it when a 15 liter Cummins blows off a boot while in a hard pull and producing 40 lbs of boost.
The extreme loud noise and immediate loss of power will almost give you a heart attack!
Lol, right? Especially pulling a 12% grade with 44k+ in the box.
@@bigdnelyria lol split the boot on a 2019 ISX pulling grapevine thought I blew the block
I only blew a boot off a 9psi car. It must sound like a tire bursting when it happens on a big truck!
Oh yeah. Blew off a hose running Line haul going 75mph climbing a hill. The pop and boom and then the lost of power scared the hell out of me to the point I was shaking. I thought the motor let go.
Happened to me many years ago with a cummins m11. It was weak anyway but when that thing blew off I was doing 25mph on I-81 trying to limp into the ta in Roanoke. I thought the engine blew up. Like 1998. Seems like a lifetime ago
I never really understood why DPF-equipped diesels need a regeneration procedure, this brings all the information I was previously lacking. From the high rpm noises, to the blue fluid working against NOx emissions (and also against the greenery), to the little holes in the tailpipe, you covered just about everything I couldn't think of before.
So it's basically a forced Italian tuneup.
Eye-tal-ee-ann tuneup as Derek from Vice Grip Garage would say!
That is the reason I keep my 04 1/2 GMC dually going. LLY with a full delete and upgraded up and down pipes larger hot and cold pipes on the turbo. Tons of power and gets 22.7 mpg empty
Sorry can't beat a Cummins
Thanks for not editing out forgetting to tighten that clamp. I was waiting for it to come off under boost and was not disappointed!
Love the honesty. Everyone makes mistakes. As long as they are caught before anything gets damaged all is well. Thanks for not cutting that stuff out
even afterwards it's fine. just fix it and don't try to blame others / make others pay for it
Watching your video reinforced my intention to NEVER get rid of my '96 Dodge with the 5.9 Cummins mechanical injection system. I've heard horror stories of the new high pressure diesel engines in RVs that won't start because some sensor failed. I've got a Cat 3208 with none of that nonsense on it, thank you.
If the truck finally rusts out it'd be a good idea to just transplant it into whatever new truck anyway, ridding yourself of the problem before you ever have to deal with it at all
Ray: ''It's gonna run high rpm range, around 2000 or so for this procedure'' . RX-8 owners- so you just gonna let it idle? Nice jump scare with boost pipe, loved it :D
My Renesis idled around 850, iirc. The eye-opening RPM was the redline at 9000, or a little more :)
@@youtubejunky7481 Or in the RX8's/Renesis case, no power....thing was slower than bigass GMT800s soccer mom's drove and barely faster than BDF engine GTIs. Mazda had to keep re-rating the power lower and lower when owners discovered dyno numbers didn't add up. IIRC they even had a buy back program to avoid legal action.
@@youtubejunky7481 the engines have low torque at low rpm, they are good cars to learn race tracks on. Most people engine swap to more fuel efficient 6 cylinder j2z
As a motorbike rider that's pretty much what I thought as well, 2.5k is a touch above idle, the rev limiter doesn't kick in till 12k
@@cup_and_cone eh they're not bad for what the cars weigh they're fun a good steady 280hpish if you actually know to take care of your engine unlike literally everyone who bought them apparently
When I was green, my boss told me to pick up blinker fluid and a metal stretcher. I'm not falling for the exhaust fluid trick.
man, that was beautiful !! and letting the engine idle after the procedure to cool itself off is a big plus !!!!
Never idle a duramax or you will have to do another regen. Hard on Nox sensors. Take it for a drive instead.
.worst GM product ever designed will never buy another GM product.
@@markhook499 The service regen procedure for the Duramax 2.8 (not sure about other sizes) calls for I believe 10 minutes of idle at the end to allow parts to cool off. I read this when I had to do a service regen on my own 2.8, it was several months ago and I don't remember if I read it in the service manual or the tool I used to start the service regen.
@@8180634 how did you do a manual regen on a 2.8 I had one and had to take it to the shop all the time So I traded it off ✌️🇨🇦
@@8180634 It's good for all engines with turbos, especially if you're towing heavy or just driving hard in general.
@@benjamins94 makes sense if the turbos are super hot, want to keep the oil flowing until they cool to prevent coking if the oil in the bearings.
Great job explaining REGEN. I own a RAM with 6.7L Cummins. If I do everything correctly regarding maintenance, I should never have to do a manual/forced REGEN.
I have one as well, it does it's own thing and I havent had an issue yet... if I catch it in a regen cycle I will try and get it out on the highway for a blast but if not no worries.
I was pulling my 40 ft. fifth wheel up and down some steep grades, and about half way up one of the steepest parts my hot side hose blew off, scared the crap out of me and thought the thing blew up. Lucky to have a large hose clamp I use for my prospecting equipment, the hardest part was standing on a little step ladder on the side of the road, I only fell off once, lol!
I'm that guy that never tappy taps that like button. You Ray are now the only exception to that rule. Jes sayin'
I love it when you make mistakes you are man enough to keep them in the video to show us every good mechanic makes mistakes sometimes. Thank you Ray
Thanks for uploading both parts and not making us wait.
I have a Renault powered diesel car here in the UK. Once a month I take it down the motorway at a steady 70mph for about 30 miles this helps the DPF (diesel particulate filter ). So far never had any trouble with build up of soot. Also use a cleaner in the fuel tank. Had the car 7 years now
If your not rolling coal your not a diesel
AMAZING! I'm an Electrician by trade. Now a fiber optic splicer/certifier. What you do for a living is my entertainment. I learn something new every time. Unless you're soldering wires. HA
I tend to nitpick in my head every little thing when he does soldering. LOL. (IPC certified here) The biggest cringe is the soldering iron, but it gets the job done.
@@GReaper , Hard to believe that soldering wouldn't be the best way to splice the injector wires? Maybe you know the reason crimps are used?
That is brutal! It goes to show the benefits of a long drive at highway speeds is a better and kinder regen procedure for a diesel engine and turbine than a forced regen with the vehicle stationary. It is unbelievable in this modern day that there is not a more engine & turbine friendly way of doing a forced regeneration.
I am glad you let the engine idle for a further 20 minutes, again for he sake of the engine and the turbine. I am old enough to remember the days when after high speed engine driving yo had to run the engine gently for the last part of the trip or let it run for a while at your destination to let the turbo cool down. That was why engine "turbo timers" were developed back in the 80's - due to the increase in OEM and after market turbos in passenger 4wd vehicles. Turbos were failing everywhere because people did not understand they needed to cool down after hard use. Most of the time driving gentler for the last 15 minutes or so was enough.
In the 4 years I've been driving my current semi, I have never had to do a parked or forced regen. The truck has always done passive regens while driving, if it is doing one while driving it will indicate when I slow to 5 mph, letting me know not to shut off the truck until exhaust gas lowers to safe temperature to do so
I remember being taught to always keep a diesel running for ten - fifteen minutes when you finally came to park up just to allow the fan to cool the engine down a little, and I’m sure most lorries did not have turbos in those days. It was just something careful drivers did. Pro drivers looked after their motors back then, and did not thrash the arse off them.
I did not have a scan tool or forced re-gen. when I was young. Got on the highway/motorway and go for it until engine temp reduced.
@@CrimeVid newer engines are not even close to " the good old days "
Proof positive that anything mandated by a Gov't Agency is detrimental.
Worked a summer washing a companies trailers, got to witness a brand new Volvo semi blowing fire out of its stack. Driver explained that its an automatic cleaning procedure that the truck does when needed. One of the coolest things I've seen from a diesel.
That was exactly what this was, but the fire doesn't usually get to the end of the exhaust on pickups, although some Fords do shoot flames.
The first time I forced a regen on my F-250, I was shocked exactly how hot the exhaust gas was. I held a thick piece of cardboard about 18” from the tail pipe and it almost instantly burst into flames. They will absolutely burn nearby grass and anything else that is in close proximity if precautions aren’t taken.
That is why all the dire warnings!!
Yeah the extra fuel injected into the exhaust stream to bring the DPF up to temp to decompose everything in it down to ash really shoots some heat. Also, you need to clean up the DPF every 150,000 miles to remove accumulated ash (Something most people don't read their manual to find out about)
Yeah.. the burning point of paper is 451°F
Like the book.
Fahrenheit 451
Yep, I caught grass on fire with an Isuzu diesel box truck once.
My only problem with regin is your burning the collected partials and putting it back into the air, so why are we doing this?
I am never gonna use this knowledge I learned today from this video.. but it was hella fun to learn
I'm sitting here in Missouri, snow & sleet (9°F) all over the place. You, my friend, are wearing shorts & a short sleeve shirt! Can't wait to move back to FL!!
I'm sitting here in northern Ontario (-29). You, my friend are lucky, can't wait to move back to Missouri 😉😘
@@LukeRT All I know is that we BOTH are nuts for not getting away from this COLD!!!
I know it wasn't funny when the boost pipe came off, but I got a chuckle. Not at you, but the exclamation you made when you IMMEDIATELY knew what it was and shut it down. Hey, you're allowed an occasional one. Thanks for the informative video on the regeneration procedure. I had no idea.
I have never had the chance to work on a diesel. Thank you for the lesson.
Beautifully explained
Thanks for explaining and showing this. I have a Kubota L3901 tractor that does a DPF regen, even though it does not use DEF. Now I understand how the system works. Now I have a better understanding of why the engine has to be at operating temp before the regen will start. Yes this video was educational for me. Again thank You. I enjoy your videos very much. No I am not an automotive repair tech, I am a retired stationary boiler engineer.
Regen and DEF are for two different systems. The particulate filter catched soot and regen is a burn down of soot to ash. Much of the ash gets out of the paticulat filter from this process. When DEF is used it is for a separate catalyst (SCR) that uses DEF for the ammonia used to grab (not a chemist term) nitrogen out of NOx and make Nx 🤔 and Ox. When the ngine makes less NOx and other means can reduce it then no SCR and DEF is needed. Several medium and small tractors avoid the extra hardware due to milder tuning that does not produce much NOx during combustion.
Nice video now I know how it works.
@@jimmyaber5920 Nice summary. Different engines use some different strategies. Earlier engines used EGR to cool down the combustion temps to limit the NOx, but you get more particulate, this the DPF.
The SCR systems were put in place to reduce or eliminate the EGR. That allows higher combustion temps to reduce particulate but increases NOx emissions. It seems they are still trying to find a good balance and optimize the ratio.
@@masteranchovie7078 EGR is an exhaust gas recirculation which is a simplistic way of getting rid of soot without a DPF by reburning exhaust gasses and reducing new unneeded oxygen to the combustion chamber keeping NOx levels down.
An SCR uses DEF to remove Nitrogen oxide (NOx) and works together with a DPF as they both require high heat for their Reactions.
Now all on road diesels use all 3 systems to achieve emissions requirements and they're big money to replace.
Here in Australia, it's called Ad Blu and actually, if you put some of this in one of those weed and feed grass bottles that connect to your garden hose the Urea acts like a fertilizer for your lawn, but be prepared to be mowing the grass quite often lol
Because urea is high in nitrogen :)
Its always fun to run regens on tractors in negative temps when you can see the exhaust vapor change as it starts dosing. Not so fun part is making sure you catch it before it idle shutdowns when the regen is finished and everything is still hot
And after you told "Petah" to slow down, too....I always love it when I'm humbled like that too. Another excellent video series!
My god what !!!!! Thought the engine was going to tear itself apart 😳.
Never knew this was part of what happens when you renew a fuel injector.
Wonderful vid shows your infinite patience and knowledge.
Great vid keep them coming Ray 👍😃. 🇬🇷
We used to have to do this weekly at the airport on the fuel trucks, more scary when you think about 7,000 gallons of jet fuel behind you with that hot of exhuast, we had an area away from everything we would park them at
It isn't because he replaced the injector. It does this regularly while being driven to burn off the soot in the DPF filter. It couldn't do its regular regen to burn off the soot because of the misfire and bad injector. So this just let it do its thing before giving it back to the customer. It otherwise would have done this on its own, while being driven, preferably on a highway run.
@@m476nycity well sort of.
The dpf catches soot which is unburnt fuel in the exhaust before it is released into the atmosphere. A bad injector and often other failing components will more than likely cause excess soot in the exhaust necessitating the regen procedure. A clean running engine with no problems will not produce much soot at all and more often than not take care of any whith normal driving.
So the act of replacing the injector itself doesn't require it but more than likely the situation leading up to the replacement will. If that makes sense.
This is one thing people don't really understand about diesels with this emissionscrap on it. The computer uses the sensor input to tune the engine on the fly as it is bring driven just like any other vehicle. If anything doesn't react or read properly, it will produce soot in the exhaust that will be or should be caught in the particulate filter. You likely will not see the problem in the exhaust if the dpf is doing its job and not realize it is happening until you end up with regen issues. This can be going on with or without an active engine code bring thrown. It makes the entire experience frustrating for a lot of people.
@@ThePbatemon yup, when we got new fuel trucks with DPF i told our mechanics that the truck will be shop queens with the amount DPF issues there will be. Company solution, don't idle the trucks. Kinda hard not to do when your sitting there in -40.
@@892guns yeah we have to idle ours, between fueling the computers we have in each truck upload back to base and pull the fuel info for each of the airlines, so like fuel amount and whatnot but they only do it while running, also we have that cold weather issue but not as bad as you guys lol
Ray, interesting story in today's (Friday, the 25th) Sarasota Herald-Tribune on the right-to-repair issue, focusing in Massachusetts where one manufacturers' dealers have disabled certain features on new cars.
Louis Rossman right to repair
First time you do a forced regen it does take you aback how noisy and aggressive it is, not one to do in front of a nervy customer for sure. Thanks for showing that tho, be interesting for those who haven’t done or seen it, first class buddy
Two videos? This ladies and gentlemen is what you call " a treat especial"
Love the videos...I've learned a ton from these things. But, maybe I can give you a caution using your infrared camera. I'm a Reliability Engineer, certified as a Level 2 Infrared Thermographer, so I've been trained, and I've used a variety of IR cameras. The crystal in the camera that does the detecting is actually grown in a lab, then ground and polished. Nearly the entire cost of the camera is that crystal...and I'm not sure if you had to sign a document saying you wouldn't take it out of the US or not, but that crystal is the same type of thing used to manufacture heat seeking missiles, so the Fed regulates these fairly heavily. Anyway, that crystal - the collector - can be damaged if you look at temperatures too high. Most cameras have either a manual or automatic filter that will drop into place (internally) to shield the crystal, so it can view higher temps, but usually with a reduced resolution. I don't know the specifics of your camera, but 1000ºF is really high for these things...a lot of them are only rated to maybe 600-ish degrees max with the filter, typically 300-ish without the filter. You may want to check to be sure your camera can handle those high-high temps so you don't accidentally damage the crystal. Keep up the great work and the great videos!
Cool learned something new thanks👍
Yeah I really don't understand why they're so damn picky on where you can send them or take them. It isn't like the CCP hasn't just hacked and copied everything the military has made for the last 15 years
@@michaelf.2449 Absolutely agree, but this is the world we live in...
@@michaelf.2449 sadly it's worse than you realize, it has just been reported that the Biden administration has been handing over classified documents to the Chinese in return for help with Russia. Long story short, they took the info and told the Biden administration to F off and laughed at our pathetic weak curopt potato of a president!
@@bigjay875 Hey "BIG" jay, we're not here to talk politics. Go crawl back under your Q and drink some more of that Kool-Aid, then go post your BS on Fox and Friends.
I had never learned anything about regens. I am a 1 man muffler shop but also a 63 yr old dinosaur. Thanks Ray.
So yeah we appreciate you leaving that in the video. Very entertaining. I’m sure it did startle you. Every time I do any repairs I am always super aware of anything off in the sounds or smells. Other people try to make videos of the trouble shooting of different makes of vehicles but no one comes close to making videos as good as yours. Please keep it up. I’m always happy to see that you’ve loaded new vids to your site.
Thanks Ray. From a Cummins owner.
Ray, I'm no kind of mechanic, but I learn so much from your videos. They're informative and entertaining. Love your practical solutions to sometimes thorny problems. I have a stupid rookie question for you regarding the diesel: Why change out the fuel lines (inlet & return) when you replace the injector?
Entering that Injector ID string reminded me of manually typing in Windows License codes back in the day xD
I love how Chevy thought underhood DEF filler was a good idea
It is not a bad idea. Some idiot employees have put def in the fuel tank and have nearly destroyed the engine, minimum $10'000 repair bill or more.
@@johnseavey6622 we had a guy piss in multiple trucks def tanks and caught him on security camera. When confronted he said he thought it “was mostly cow piss anyway” people are such idiots…he was fired and is now suing if you can believe it
Absolutely educated. Thank you.
Old enough to say: I remember when owning a diesel was add fuel when needed and ten years later you would think, maybe I should change the oil.
Yes, these are a stupid system. I have all vehicles from before the whackos made this stupidity required.
Excellent, excellent, excellent series Ray. It was interesting and educational to me. I have been curious about the regen process as I was contemplating a diesel option on my Gladiator. Kinda' more happy with my gas guzzler now..
Ya to that. Diesel only makes sense in commercial/industrial apps. Eventually they'll be banned from inner cities as they already are in most of Europe due to their long carbon molecules. The leading cause of breathing diseases in young children living in crowded cities.
yup,the regen is a load of bs.. all to do with epa, greenies, trying to get you to go EV.. all this so called green bs costs more than not having it. global warming is bs. it was 2 degrees hotter, before the industrial revolution. air/oxygen, comes from the sea, not trees. its all a scam. we will never run out of oil,coal,gas. just need to be cleaner with it. not create whole new costly poluting industries. solar panels, are not recycleable, wind farms cost more to recycle than build. a toyota prius, will break even after 75 yrs of running. yes, its a bs scam..how many people did leaded fuel kill, as oppossed to unleaded pumping out sulfur dioxide,. poison.. which,is better,,niether..
If he would have said the price of that single injector and the replacement components you'd be even happier. Diesels are great for their intended purpose, but the high pressures make the components very expensive.
I have never owned a diesel powered vehicle, probably never will, but I enjoyed the education. If the subject ever comes up in conversation I will have a clue about what they are talking about. Thanks
Thoroughly enjoyed both videos! Thanks Ray!
Went to college wrote a paper on this and did not understand a word I wrote. But this made it clear cut about the Re-gen process thanks
So cool! It’s amazing that that procedure doesn’t blow the engine up or the turbo charger. Running a diesel at high rpm’s under load, is less taxing on the engine, than running a diesel that is just sitting still in park/neutral with no load on it. Engines and technology have definitely come a long way!
No it’s made for that. This is a no load hi rev, that’s bad for engines.
Why is it bad for engines to do high rev low load?
@@RedShift5 Because engine is not under pressure. Piston rings are not expanding like they should, so this actually creates soot and pollutes the oil.
It also can overheat... even thou fan is controlled by comp... its better to have drive airflow through the running high rpm engine.
Never seen this done before. Pretty impressive.
Great video on dpf regeneration Ray. Makes me miss my '92 dodge 5.9 Cummins with manual transmission, Bosch VE pump mechanical injectors and a fuel shut off solenoid. Blissfully simple. Ahh yes, the good old days. Once again Great video Ray!
My '04 Cummins 5.9 CRD, 2500 is the same way...none of this DPF stuff to worry about. I keep getting asked if I want to sell it.....NOPE!
@@ajwilson605 I get the same thing about my 2004.5 Cummins about wanting me to sell it. I learned real quick yes I sell it but I want 80K for it. Otherwise no I do not want to sell it.
Another awesome video Rainman. Well done for keeping it entertaining and informative. Just sent it to a neighbour who owns same truck without dulies tho. I was over working on his truck that had p2002 and p2453 codes. It turned out to be a broken hose that is used by the pressure sensor system on the filter. It’s back on the road after replacing both of them. I forgot to take a photo of which way they were connected to the Exhaust Gas Differential Pressure Sensor though! I hope it doesn’t matter or I got lucky and reconnected each to their correct input port!
Ray, thanks for taking the time to show this and explain it. This and pt1 have been a nice mini learning session for a guy thinking of trading his halfton gasser for used 6.6.
Learn something new everyday.
Between having to program replacement parts to complete a repair and DPF regen exhaust temperatures well into 4 digits, this technology, while impressive, just makes me shake my head.
This video should be taught in schools for auto/diesel mechanics. There are a lot of mechanics that have somewhat of a lesser ability to grasp the exhaust "technology" that has been added to modern vehicles and your simple "to the point" approach has made a difference in the ability to absorb the functions of sensors/injectors and how it affects the process of regen. Btw..... you wouldn't be human if you haven't had to fix a forgotten or damaged cold side for whatever reason 👍
Very informative and entertaining! Thank you Ray. Where else would I learn about regeneration of a diesel exhaust system? 😄
Ideally you would never need to do this.
This function normally activates during long drives.
Long gone are the days of sitting of the front end with a leg on either side of the engine wile working on the vehicle. This has been the most interesting video (2 vids actually) I have seen in auto maintenance. Thanks Ray and I dig your sense of humor.
Talk about a diesel version of an Italian tuneup. Thanks Ray, both videos were very interesting. I teach in an airplane that is powered by 2 common rail FADEC controlled liquid cooled Diesel engines. Trying to convince the younger crowd to understand how different and advanced the common rail diesel engine is, verses standard diesel or the usual horizontally opposed aircraft engine is a battle.
Pucker play into when booster pipe was disconnected. Could have damaged engine. I glad you caught it in time. At the last I looked at modern diesel truck they don't have to have to DEF fluid.
Talking about forgetting to do things up.. I once had a manual gearbox fault on a Ford. Main dealer fitted new gearbox. When I got the car back from the garage it would occasionally jump out of 5th gear when you got to 70mph and made a knocking sound when on full steering lock. Garage had car back in for three days and said they couldn't find the problem. Tried another garage and they couldn't find it either. Got some ramps and went under it myself. Found two bolts holding the gearbox on were loose. Not just slightly loose but 5mm loose, probably just hand started. Under load the engine was moving in its mounts so the head pressed on bodywork and somehow caused it to jump out of gear. Not impressed.
I’ve often joked with frustrating issues that the solution is to set the vehicle on fire in the parking lot.
Nice to see a vehicle that has automated that procedure.
I don't know if it is the same in other countries, but here in OZ there has been a disproportionately high number of truck fire over the past 10 year or so.
I have put it down to the extremely high temps that they run at when doing a regen. I don't know if my theory is right, but we never had as many trucks catch fire before these systems came in.
We were even told not to park the trucks on grass when a regen in progress as the heat will start a fire.
Same everywhere because of that emissions junk. It puts out less carbon but more bad stuff with the burns too.
Here in the US, i drive a 2013 freightliner box truck with a Cummins 6.7L that has that system, i once did a parked regen that burned a hole in fresh laid asphalt, and had it starting to smolder. If you do a regen at night you can see the flames coming out of the exhaust!
Yeah, I was going to mention that - we lost a few RFS (Rural Fire Service) trucks when they did the regen while parked in dry grass - a lot of our light units (usually Toyota pickups) do very little driving and the regen cuts in without warning. And there was a funny story of a police BMW that burnt to the ground after the driver left it idling just off the road......
I used to run a new Cat 982 loader and it would regen at least once a day. There's a learning curve to loading trucks while the engine is running high idle during a regen.
Never knew diesels had to go through a regen cycle like that. Amazing.
And am I the only one who thinks that having to program a fuel injector like that is about as silly/unnecessary as BMW making you reprogram a new battery to car?
You have to program injectors because every injector has a slight amount of build tolerance which has to be eliminated to ensure correct injection quantity and as a result lower emissions.
And with the batteries: Its not just BMW, almost every newer car has to program a new battery. Its because newer cars have a battery management system which overlooks battery activity and controls how much a battery is charged and checks how much it discharges. If you just install a new battery, the car may overamp the battery if the old one was already failing or will show incorrect charge levels in the instrument cluster (if equipped). Every battery is programmed with a serial number, if you just change the last letter of that number the car will think you have installed a new battery.
And yes, old cars didnt need all of that but in old cars you will not find battery management systems and the emissions control wasnt as strict at the time so injectors could just be replaced
you have no clue about bmws , i worked for them for 20 years , you cant not , can not compare a bmw to an american car ,,,,,,there is nothing the same
@@michaelj1232 Much to the relief of American car buyers ;)
@@chrisfreemesser5707 exactly my sons plastic charge pipe blew off at the throttle. Switch it out with a metal one $300 less than the 425 plastic one. BMW are trash, fun to drive when they work.
I knew kinda what the regen did. This filled in the blanks. Very interesting. Whole series was cool. Thx Ray.
It's not uric acid, it's urea, which is actually a very effective fertilizer and not harmful at all to the environment.
Just a bit of additional info on DEF:
It is a solution of urea and deionized water. Similar solutions are used in agriculture for fertilizer. It is not urine (though urine contains urea along with a bunch of other stuff), it contains no uric acid (which is what causes gout) and is not harmful to plants or animals.
You got the basic chemistry pretty much right. When DEF is injected into the exhaust stream, the heat evaporates the water and converts the urea into ammonia. The ammonia, in the presence of a catalyst, converts nitrogen oxides (bad stuff) into nitrogen and water (stuff normally found in the air). There's a wikipedia article if you're really interested.
You can get excess ammonia in the exhaust which isn't good. Ammonia is also commonly used as a fertilizer in agriculture, but it is a gas at normal room temperature, and is injected directly into the ground. SCR systems include an ammonia slip catalyst to reduce the amount of emitted ammonia by converting the ammonia to nitric oxide, and then react that with additional excess ammonia to yield nitrogen and water as before.
Good job on explaining the chemistry.
Good explanation on the use of urea. You might add, that nitrogen oxides are not caused by anything in the Diesel fuel, but by nitrogen in air being burnt by oxygen. The higher the temperature, the more nitrogen oxides, hence it is more pronounced in Diesel engines.
On the subject of DPH system, you forgot to mention the 10 of thousands to 100s of thousands of plastic containers the stuff comes in an less than 10 percent get recycled the rest are burned or end up in a land fill. So ya I don't think the ends justify the means on this topic
Nobody thinks to look in depth before making decisions anymore. If they did we wouldn't have half the crap we put up with today which seems to do us good but actually doesn't. When your toaster has a computer in it yet still doesn't make toast any better, cheaper, or more reliably than the old ones we've gone too far in the wrong direction.
@@P_RO_ well said good sir 👍
Very interesting video. First time for me to see this process.
What will happen if you dont program the new injector? In the long run
If not calibrated for the new injector, the fuel dosed during an injection cycle may not match what the ecu expected.
It has to do with the flow of the injector which was measured during testing and the amount it flows is part of the code on the injector.
That results in a bit more power, or less on that power stroke of the cylinder, if that code has not been programmed in.
The result is normally a rough idle and potentially misfire codes being stored.
Also, a rough running engine is not good.
@@Uncle-Duncan-Shack So instead of trying to make injectors that all flow the same (more money). They measure the actual flow rate and encode it into the serial number. Then the ECU uses a fudge factor to make all the injectors flow exactly the same (as best possible). Interesting.
Thank you. I have always understood the principals of Diesel engines but have never actually seen the regen process. Very cool.
Man do I know that sound. Happens a few times at work. When its summer and the bay doors are open I can hear it from my parts counter. Oh...thanks for the badass thermals on the exhaust!
lol... you heard and felt it... great job
I loved the dieseling at the end!
Same thing with the CAC pipe on my powerstroke, did some work and didn’t tighten it enough, went for a test drive, soon as I tipped into the throttle and the boost was coming up BAM ! Lol I thought I blew the engine! Haha, limped back home tightened it up and it was good to go. Lesson learned ~
DEAR SIR,
YOU ARE A GREAT HELP TO ME WITH YOUR KNOWLEDGE AND GM TRAINING. YOUR CASE STUDY IS RIGHT ON THE MONEY FOR ME THANKS A BILLION. HAVE A HAPPY HOLIDAY YOU AND YOUR FAMILY.
This video was very educational. As a mechanic of 20 years I couldn’t have described it any better. Another awesome video.
Clear as mud in a hail storm!
You do have your moments Ray.
The most incredible job I've ever seen! The amazing computer controlling the engine.
Thanks Ray this was really helpful to me I drive a 2 liter diesel jag xe and now I understand the dpf and the Def fluid, while I have never had a problem with the system I am now Informed. Cheers Ed
Never knew modern diesels run on these kind of system. Thanks for sharing Ray. Keep up the good work.
I really like how you explain everything so us shade tree mechanics get a understanding what and why things happen. Love the videos Ray.
I had to get a regen on my skoda superb a few months ago didn't know what was involved thanks Ray good one
Very informative. I have been curious about how the regen process works. Thanks for explaining this to us.
Danny from Tampa here. Excellent video. Super informative.
Im always hearing the DD15's at my work doing Regens but never actualy knew what the process entailed. Very educational video! Thanks!
Found this very educational and entertaining. First Regeneration I've ever seen. Thanks so much!
this is why I love my 96 f250 I don't need to worry about any of this stuff or the wasted fuel to do it
So wishing i were in fla. 4' of snow at -23C here in N Ontario today. My dart ragtop is in paint shop. Hoping to get back to car shows next month.
Today’s video was brought to you by the words “hot tub “ & “heat soaked “. Awesome Ray.
wow amazing work I never seen one of these service before in my life love to meet you one day
Used to be a Ford tech, those regeneration cycles on the 6.7 powerstroke were always loud enough to be heard through the whole shop even when all the bay doors were closed.
Hi never did anything on diesel engine except an old Ford 250 lariat. Had to change the glow plugs. That was a very great engine. I sold it at 258 thousand miles. Think it was a 1989. I sure loved the gas mileage when traveling with trailer. Not gas guzzling like gasoline engines
We had a Case skid steer that blew a turbo right before it did a regen, instant fire. Good thing there was snow on the ground.
Reminded me of a self cleaning oven. Cool vid.
hi in the early days of common rail diesels .the DPF was going to be a replaceable cartridge type filter.this would have been much kinder on the engine .
Hi from U K excellent vid that worked well for you most trouble we have is the Ford Transits absolute nightmares!
Oh boy. I've had a charge pipe come off on a testdrive. Was good for 15 minutes but as soon as I went full throttle bam. Was fixing on the side of the road :P
My brother's particulate filter was blocked and the only way we could unblock it was to jet wash it that seems a lot easier to do. My brother's car runs like a dream now
You missed the phone ring, my day is complete.