How Does a Glow Plug Failure Cause Clogging of your DPF (Diesel Particulate Filter)?
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- Опубліковано 3 лип 2019
- In today’s video see how a DPF regeneration cycle is carried out, and see if having faulty glow plugs will result in a clogged Diesel Particulate Filter on your car. This video applies to diesel cars built between 2000 and 2007 - cars which have a diesel particulate filter, but do NOT have a diesel oxidation catalyst (DOC). Watch and find out!
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I haven’t had any luck with mine so far but this series on the DPF has helped me sort out multiple issues that could be causing the issue. Very informative and very helpful compared to any other video on DPF issues, top work
Thanks! Keep going - I hope you get to the bottom of the issue soon!
Very few are mechanics nowadays. Instead, there's plenty of part changers out there. Thanks for the thoroughly detailed explanation.
Yeah, diagnosing issues certainly seems to be a dissappearing art...
Part-changers who are just reading what do to from DT Codes. There seems to be a depressing lack of actual understanding of the systems and interactions between the components.
Thank you so much! My mechanics exact words were, " you need a new dpf filter and you have some faulty glow plugs we can take care of too. So far the estimate is at $4500!!" My car is 10 years old! I had just explained that my husband had recently unexpectedly passed away and my mother and I took the car in. Why do mechanics think women can't read or do research or have male relatives or friends that can advise them? I am definitely going to pass on them repairing my car and I will never take my car there again!!
If you get those glow plugs (or controller) replaced, then there is a good chance that the DPF will start working properly again on its own. These computer-contolled diesel cars are not understood by a lot of mechanics as they haven't done the necessary update to their education, and these types of cars have only been around for a short time (short as in 20 years). I can't imagine what will happen when most people have electric cars...
Very nice presentation. I didn't know ASMR and car stuff go so well together.
Maybe it could be a new trend! Thanks for watching!
Hi Steven, Thank you so much for your very informative post. I am new to diesel engines and my SAAB 9-3 1.9TiD went into Limp mode recently. Two mechanics tried to steer me towards a new DPF (AUD$2500+labour) or a DPF clean(AUD$795+labour) . However, checking the OBD2 fault codes, I noticed (due to this post) that the glow plugs had a fault as well as a DPF ash fault code. As it turned out all 4 glow plugs were faulty. After replacing them, i went for a 30min drive with revs above 2500rpm and much to my excitement the limp mode - Limited Performance - display disappeared and the car has returned back to full performance. You are a GEM💎. When my DPF does finally require removal for a clean, i'll be following one of your other videos. Looking forward to more videos in the future.
That is the perfect result - the money stays in your pocket! :-)
Excellent video. I'm an N47 owner and this is exactly what happened to me. If only I saw this video a couple of years ago, hehe. I guess you live, you learn
Thank you so much for sharing your insightful information. My 2012 BMW X5 35d got its check engine light up shortly I replaced engine oil and filter in summer. I did not pay attention to it until I drove the car for a few months, then noticed the engine ran roughly when it got started while ambient temperature was low - 30 deg F or below. I checked the error with my OBDII reader and found out the error code P0672 - Cylinder 2 Glow Plus Circuit (failed or open). As the car still could be started normally, I once thought to keep using it and replace all of glow plugs and its control module by myself (about around $400 material cost in US) once the ambient temperature goes higher next spring, so I can work at my garage to get the repair job done.
After watch watching your video, I decided to have the BMW dealer to get the repair done as soon as possible, even though it might cost me $1400 to $2000 (I estimate it would take me four hours for myself to get the repair job done, plus material cost) as soon as possible, to avoid any further potential damage to DPF - which is even more expensive repair.
Thank you for sharing again, Edward
Thanks heaps for the knowledge a day when you learn lots is a great day cheers Dave 🍻
:-)
I have exactly the same story with my VW … thanks for sharing this valuable information
Glad it was helpful!
As a new guy to diesels, just got my first a Citroen C4 Grand Picasso with a 2 L HDi engine, with exactly a p1351 glowplug error, and a dpf that says it full, and won't regenerate, this video explained why this system don't seem to work or can be forced to regenerate.
This was a great video.
Hi, all the best in getting your new car sorted out - you're off to a great start!
@@StevenBTuner thank you :)
It was a very easy to understand explanation!
@@StevenBTuner btw i don't know how familiar you are with PSA cars, Citroen and Peugeot? They use a fluid called eolyse, which makes the dpf burn of the soot at a lower temp, these cerine particles get stuck in the dpf where they accumulate, they don't burn. So here after a certain interval, the dpf need to be changed or cleaned.
From what I learned with my 330d you have to make sure that the glow plugs and glow plug relay module are all working, and that your thermostats have to be working in order for the car to get up to running temperature else the DPF will not regenerate.
I did mine few year back but is again blocked, only city driving since covid and one glow plug error showing. That's why my dpf has clogged again. Thanks for the video.
👍
Awesome vid! Such a soothing voice too 😜
Thanks!
Hey Steve thanks a million, I'm having the same problem right now and my mechanic is telling me to get a new DPF which is gonna run me around 2 grand in my x5 35d. U are God sent🙏thanks alot man and keep the videos coming. I just sub to your channel
Thanks for watching and subscribing! I hope you get your BMW back to full health very soon!
skilo skilo So did you get your DPF cleaned?
@@ggua92722 no still waiting for the mechanic. He ordered it from California cause he wasn't able to get it from the dealer here where i live in NY. So im just being patient
skilo skilo, Can you please ask your mechanic where in California? I live in Los Ángeles. Me too I’m experiencing problem with the DPF. I connected the code reader and i get code 480A with a message that says DPF heavily clogged. My wife drives the 2012 X5 and it’s mostly city driving. So I took it for a good 40 minutes drive on the freeway , set cruise control at 65mph, I did the driving at midnight, no way a was going to be able to do during the day. Too much traffic in LA. Anyway I’m just getting prepare just casete DPF needs to be replaced. Good news is that after the 40 min drive the CEL has not come back. We’ll see. Thank you and I’ll be waiting for the info.
@@ggua92722 i will ask him where found it I'll keep u posted
I’m glad I watched this video. After changing my DPF, a DPF pressure sensor, glow plugs all six of them and a new MAF sensor the problem still existed. I have now been advised to change both thermostat even though the temperature on my Carly reads between 80 and 90 which I’m sure is the normal op temperature.I have come to the painful conclusion that it is definitely the glow plug module. The glow plug light is supposed to light up and turn off when the Pre heat is complete, what I’ve been told.Mine only displays for about half a second only when I’ve pushed the start button to crank the engine and that half a second exposure very rarely happens as well usually in winter.I have a e91 335d 2011. Thanks for the video. It’s times like this you feel like punching your mechanic in the throat. 😡😡😡😡😡😡😡😡
Hi, thanks for watching - but sorry to hear that so much has been done to your car and that you are still having the problem! You will need to get a code reader connected to your car that can give you the BMW specific codes to help you troubleshoot your issue - the cheapest I have found is the Autel AP200. If you are still getting error codes for all 6 glow plugs then it is most likely the glow plug controller that has died (although the ECU also doesn't like all brands of glow plug, so it is best to use Beru or Bosch, and use the same brand for all 6). All the best in getting to the bottom of the issue soon!
Good info, had two glow plugs gone on my VW Crafter, DPF wasn't happy. Hear about "active regen" for a while, never knew it was done via extra fuel and glow plugs working hard at same time. Cheers
Hi, thanks for watching, and glad the vid helped you out!
This guy is amazing. Straight to the point and facts!!! This video definitely confirmed my suspicions with my car.
Thanks for watching and commenting! Best of luck getting your car back to full health!
Love it, love it GREAT video!
Glad it helped you out!
very informative , thank you
Glad it was helpful!
Video works like ASMR for me to be honest … 😅his voice and accent is just amazing !
😂😂
Thanks very informative.
Jusy wish somes of magicians on would explain how their tricks work in the same calm manner as yourself instead of talikng a thousand miles per hour. Again thank you.
Very useful info...❤
Glad it helped you out!
I don't know that.really useful advice. Better check those fault codes¬
Awesome video!Thanks for the logic and sharing some good knowledge! I have the same two errors. DPF and error glow plug nr 2 (VW POLO). Hopefully changing the plugs will solve it.
Hi, thanks for watching! Glow plug failure is more critical to some cars than others, but if your car is built between 2000 and 2010 then I would definitely keep the glow plugs working 100% in order to keep the DPF happy. If they haven't been changed in many years then a lot of folk change them all at once to be sure they are all good for another 5 or more years. Also a good tip is to make sure that the engine is really warm before you try and take them out, or they have a bad habit of breaking off.
You just gained a subscriber
Thanks!
Your videos are very informative and helpful and I watch all of them, despite knowing most of them. Regarding glow plugs, not all diesel engines need them so badly for dpf regen. As example the Euro5 2.0 HDI from Peugeot that is present also in Ford cars as 2.0 TDCI have an vaporizer also sometimes called "injector" in the dpf that injects the diesel directly. Another plus with this system is that it doesn't dilute your oil.
Thanks for the kind comment! Out of all the possible ways that these systems can work, the separate vaporizer/injector method definitely sounds like one of the better ideas!
Top advice.
Glad it was helpful!
My 2010 insignia 2.0 cdti was running and idling rough. The problem was the dpf. My mechanic recommended a full dpf and glowplugs delete. She's running like a champ now, and that problem is gone for good.
These videos are really informative and reinforce why my next 4WD won't be DPF diesel. Steven maybe use only one camera otherwise back lighting and sound is spot on
Hi, thanks for watching and commenting! If you don't do a lot of miles, then it can be better to choose an alternative engine type for sure. I have changed the setup for this year to be less annoying - you can see what I mean by watching any of the last 3 vids.
I guess its time to replace glow plugs at 130k, I have a failure of DPF and air intake manifold. By the way, I like your videos, very informative
My bt50 has had multiple dpf issues and I jgot told my car threw a little glow plug error when it got checked yesterday. Thanks for the heads up. I will definitely replace them now.
Hopefully your DPF regenerations will be back on schedule!
thank you.
Welcome!
Is a special socket necessary to change the glow plugs and module in my 2011 335d?
Great video, many thanks. I have a Honda CRV 2.2 which has had dpf issues....the CRV has covered 66k miles and is 11 years old. No glow plugs faults diagnosed. Is it feasible that the performance of glow plugs deteriorates over time to the extent that they don't allow regen but also don't show any glow plug faults?
Hi, the glow plugs will usually report a DTC if they aren't working, but things like a clogged up EGR valve, clogged intake manifold, leaking boost hose or leaking turbo may not show any DTC code but may still cause an issue for the DPF. Doing only short journeys will also cause issues because most cars need to be at full engine temperature and be doing a minimum speed before the car will schedule an active regeneration.
i think it is correct that glow plug dpf regeneration for non vaporiser dpf system but i dont know it is critical for the vaporising dpf system for example i have ford tourneo custom it has own fuel pump and vaporiser for dpf regenarition i had problem with dpf back than it fails regen and blows the fuse of vaporiser found the problem was the wiring connector. thank you for explaining very well
Hi, thanks for watching and commenting! Yes, there a number of ways that regeneration can be handled and it not only varies between manufacturers, but also as the BMW models have progressed through the last 20 years.
Have you had a glow plug failure clog up your BMW diesel particulate filter? Let me know!
Yes. 2007 e87 118d. The Beru glow igniter needed replacement as 2 glow plugs were not firing. I found this as the dpf was showing clogging. I did do force regenerations and this fixed it for few months. Replaced Beru igniter and new glow plugs. No more sooted up dpf.
One video that clearly explains what most mechanics do not. I have a Nissan Note 1.5 Tekna 2014 and having been told the DPF is blocked but gives error codes that the Glow Plug preheater module is faulty. I wonder if it just the glow plugs needing changing and not the heater itself. Have had to do regen twice in a year. Now suspecting the issue may be as you have explained.
Hi, module failures are fairly common, so it could easily be that. There are quite a few systems and sensors that all need to be working for the DPF to function as it should, so it is generally best to get to the bottom of engine errors as soon as you can.
@@StevenBTuner Many thanks having it checked out tomorrow.
@@StevenBTuner Hello! Just an update. Had the error code checked and the glow plugs needed changing and the error code did go away. However still having an error code showing as P2002 for Diesel Particulate Filter Efficiency Below Threshold Bank 1. Had a regeneration attempted but not seeming to go over 290 degrees during regeneration. The guy who diagnosed this is saying the exhaust gas temperature sensor needs replacing. And did a carbon clean and the soot level is showing as 43%. Changed the oil filter/oil and air filter as well and cleared the service light as well. Looks more complicated then I had initially thought.
@@ismism2737 Hi, all of the systems need to be working well for the regeneration to complete correctly. The temperature sensors can fail of course - and the easiest way to check them is to see what temperature they are reading when the car is switched off and the engine is cold, so if they say -200 degrees when it is a 20 degree day then they are definitely not working well! The most likely reason for a low exhaust gas temperature reading is that the EGR valve is not closing completely - so it may need a clean, or it might need replacing.
@@StevenBTuner Many thanks once again. Will need to check the readings and take it from there. Hopefully should be able to get to the bottom of it. Just hoping the EGR valve is closing normally as not having any rough idling issues or stalling happening. Lot's of issues I need checking to see what is stopping the regeneration happening. :( Thanks once again.
Is that concern Diesel engines without DPF? My turbo variable vanes got clogged too often? Great video:)
Hi, thanks for watching! One of the benefits of the high temperature active DPF regeneration process is that it also gives the turbo vanes a good clean too.
Most mechanics do know what the glow plugs do for regeneration. The owners normally say it starts ok to save cost. When it finally dawns that the dpf is blocked due to cancelled
regeneration attempts because of failed glow plugs they are a nightmare to remove they have a habit of snapping off. We allocate an easy hour per glow minimum, often some take far longer.......
Hi, thanks for watching! There is a lot of variance on exactly how and when they work depending on year models and brands and engine variants and specific market emission laws, so there is a lot of room for confusion. They are a pain to remove for sure - I think it is a good idea to replace them every 100k miles even if they are working. Getting the engine really hot first can help with the removal as the alloy cylinder head expands twice as much as the steel glow plug, and re-installation with high temperature ceramic grease might make them easier to get out the next time.
Thanks for your video, I have a question, my car had DPF filter warning on with 3 glow plug faults in 1,2,4 and it disappeared after long ride now it show glow plug fault with no warning on DPF soot mass 0.54 and oil ash mass 4 gms. Please advise what need to be replaced glow plug or DPF or lease can glow plug failure be rectified on its own?
Hi, a long drive will help clear the soot out of the DPF due to passive regeneration, but it is only a temporary fix. For the much more thorough active regeneration to occur, it is necessary that there are no errors on major engine systems - and on most cars that means the glow plugs too. Usually it is a good idea to replace all of them at once as well as the controller/relay, that way you don't have to worry about them again for another 10 years.
Hi, Steve! Glad I found this video. My car has a glow plug unit failure and probably the glow plugs are bad too, but I don't know for how long did the previous owner drive the car like that. The car doesn't have a dpf from factory, it's a 2004 730d. Do you think that driving the car with this glow plug error could done any damage to the engine or to the catalytic converter? The exhaust is black and it has a strong smell when the engine is running in a closed space. I will replace the glow plugs as soon as possible. Thanks
Hi, your 730d probably uses the glow plugs for starting and for increasing the exhaust gas temperature when necessary for smooth running and to heat up the cat faster - but hopefully having them out of action for a while won't have caused any issue for you.
@@StevenBTuner thanks for the fast answer! The engine runs smoothly, starts without problem, this is why the previous owner did not replace the glow plugs and the unit... Now car is in good hands I will do the job, but I was a bit concerned of the more pronunced exhaust smell and because the exhaust has black sediment. If glow plugs don't work properly does it affect tge engine in anyway or it is just the cat which gets clogged up? What do you recommend after this job should I remove the catalytic converter and clean it or just go for a long trip on sport mode and let it warm up?
@@bmwe657er Hi, there is a 95% chance that your car will have no catalytic converter issues, and the black in the exhaust is normal if you don't have a DPF. Without the glow plugs working, your car was probably putting out more pollutants for the first 30 seconds or so, and maybe takes one extra turn of the starter motor to start.
@@StevenBTuner yes, exactly the starter is making an extra turn, I've already bought a new battery as well, thinking it may need to be replaced. Anyhow thanks, you helped me a lot. Keep the new videos coming, you explain things very well. Best regards, Arnold
What about the ford transit custom which has a vaporiser with its own glow plug sometimes called a fifth injector which is installed in the exhaust downpipe upstream of the DPF, are the glow plugs in the head still involved in the regeneration process of the DPF ?
Hi, that separates out the DPF duty, making the engine glow plugs for starting and pollution reduction duties.
The camera swooping is weird and a bit freaky otherwise great video
Stefan Rick Hahaha 😂 I totally agree about the camera changing but great info.
I think the camera stuff is just part of his sense of humor, that's my impression anyway.
Hi Steven, Will the Autel Maxi AP200 tell you the glow pugs are not working?. I have DPF issues and have not bought the Autel unit yet and I want to get all issues fixed together. I plan to clean the DPF myself when the mechanic removes it from the BMW 520d. I have 303000km on the car at the moment. The turbo went recently so it looks like the oil type, glow plugs and injectors are the priority to ensure the dpf lasts from your videos. Thanks, Seamus
Hi, thanks for watching! The AP200 will definitely give you all of the glow plug errors, and all of the other BMW error codes too. All the best in getting your car back to full health!
Firstly congratulations for your work...and now the question...why bmw doesn't have that connection in TIS for Glow elements and dpf regeneration?it has all the other sensors and part's that played a role in the whole process...
Thanks! The BMW suite of diagnostic programs is not very user friendly, but I did think that those functions were in there somewhere - I'll have to have a look now!
@@StevenBTuner any news with your search?
X6 e71...dpf blogged regen...change egr thermostat, every vacuum hose, good clean of dpf, back pressure sensor... still not regen... replace Glow elements module...and boooom...dpf regen happened...
@@nicklykakis6873 Hi, thanks for watching and for sharing your experience!
Hello Steven I have e70 with a partial blocked dpf however I do have 1 and 6 glow plugs down ,exhaust back pressure sensor before filter fault and throttle body codes coming up if I replaced the sensor would that resolve the glow plug or would I need to change the glow plugs and the sensor for the regeneration to happen may I point out that there is in symptoms of a bad throttle body
Thanks
Hi, thanks for watching! The sensor and throttle body are certainly going to cause the biggest issue, so they should be dealt with first in order to get the DPF regenerating properly again. 2 glow plugs down on an E70 might still be okay, but it is certainly worth scheduling their replacement before more fail - and it is best to do them all at once with Beru or Bosch plugs, as the ECU can sometimes have problems when they don't all match. All the best in getting your car back to full health!
Thanks for this. I have just moved to a 2017 euro6 diesel with all the gubbins (DPC+DEF+SCR), from a purely electromechanical 1997 diesel so am rapidly learning about a whole new world of computer-mediated anti-pollution systems! I was not aware that glowplugs were now important beyond starting, so thanks for that. Is this true on all cars? I read that at least Renault truck systems have a separate fuel injector in the exhaust before the DPC in order to raise the temp for regeneration. But obviously re-using the existing injectors and glowplug is cheaper and takes up no extra space, so maybe all cars do it this way? Do you know when this started? Since DPFs were fitted, or was it a later innovation after designers learned that they tend to clog up, at least for some types of usage.
I found a glowplug DTC on my new van, so I've replaced it anyway (not _too_ painful on a Vivaro-B 1.6 R9M). Now I know that was well worth doing.
Hi, there are quite a few ways it can be done, and glow plugs aren't as critical for cars after 2010, or so, as pretty much all vehicles were fitted with catalysers, which will ignite the extra diesel fuel without needing extra help from the glow plugs. However if the ECU finds that the exhaust temperature is not rising fast enough then it may very well add glow plugs to the mix - and you'd have to dig deep into the software for your individual vehicle to find this kind of thing out...
I have the same issue on my 1.3 multijet Vauxhall Meriva, and have had for 3 years, good plug error code, and when it tries to regen it puts out loads of smoke and will keep trying until I figured out to take it for a blast down the motorway as soon as it attempts a regen.
Problem is on a car with little value I'm warned against replacing the glow plugs in case one snaps inside the head, which can't be insured against 100% although I'm getting that fed up I'm tempted more and more to get it done.
The trick with glow plug replacement is to get the engine really warm before trying to take them out, as the alloy in the cylinder head expands twice as much as the steel in the glow plug.
Meh, glowplugs aren't as crucial as you'd think. Last car (no dpf) didn't have working glowplugs at all, was all fine in -15c. New car, has none working glowplugs now, DPF is fine as ever.
What about the DOC (Diesel Oxidation Catalyst)? Isn't that what burns the fuel for the DPF to regenerate?
Hi, thanks for watching and commenting. The BMW DPF housing has the catalyst substrate after the ceramic particulate filter.
Gotta 2011Jetta TDI sport wagon. I think 2.0. Engine trouble light came on the other day. I filled the tank and spent 5.00 bucks on a small bottle of LUCAS fuel injector cleaner and added to tank. My friend says I can't drive short distance. Engine not getting hot enough. This my first diesel car. Not sure I understand.
Hi, I should probably make a video about the problems of short trips in a modern diesel... To summarize, modern diesels don't send out black smoke anymore, and instead they trap those nasty black soot particles in a special filter called a Diesel Particulate Filter, a DPF. After about 500kms or so the filter becomes full of black soot and the car needs to run a special program to heat up the DPF to over 600 degrees Celcius in order for the soot to combine with oxygen and change from carbon into carbon dioxide - which then passes out of the filter as a much less harmful gas. The trouble is that this special DPF Regeneration program only happens under certain circumstances: the car needs to be fully up to temperature and you need to be driving at a constant speed - usually at around 80km/h, and the car can't have any major engine malfunctions. If you live in the country, or have a long drive to work each day then this is absolutely no problem. However, if you live in a busy city or you only drive a short distance each day then the car will never be able to schedule the active regeneration cycle that it needs to burn off the black soot. So you can do short trips in your car, but you will also need to do the occasional longer journey at least once every 500kms to prevent DPF soot clogging. If there is no possible way for you to do those longer journeys then there are fuel tank additives that are specifically designed to help the soot to burn off at a lower temperature.
Hi Steven, having a problem with the temperature senzor before dpf will stop the regeneration? It’s indicating -40 degrees Celsius, the minimum temperature. The sensor from cat. shows the right temperature. Will i escape trying to clean it?
Hi, thanks for watching! All of temperature sensors linked to engine function are pretty critical for DPF function, so I would say it is not something that you can put off until later. Once you get it replaced then everything should start working again on its own if you've caught it quick enough. All the best in getting your car back to full health!
I've seen that across multiple N47 engines (have it on e92 320d and e87 118d right now) can confirm regeneration is working fine. Think the DME is using the reading from the other sensor.
Hey man, good video. It got me thinking. I own an E81 120d and my DPF got clogged 2 years ago. I think my mechanic (who replaced my timing chain) also cleaned my DPF, but honestly I am not sure, because I still have the error. (Not on the dashboard, but when I use my EOBD reader it tells me there is an issue there. I have tried resetting it several times. It then disappears for a couple of kilometers but comes back again)
Point being... I drive quite a lot. About 50.000km per year. I think 98% of these kilometers are on the highway because I never use my car for less than 30km. Then I tend to take my motorbike or my regular bike :p I often drive a single way distance of 250km.
Besides/on top of that, (probably more often than once per 5.000km) I do some fast driving. I live close to Germany and when I visit Germany I do 2 hours of driving 160 km/h. And often I also do 2 minutes of 200 km/h. The reason I do that is to nicely heat the engine so all the soot and debris can burn away. And obviously it feels awesome.
Also... I know I have 2 bad glow plugs (have had for the past 1 year). I am wondering what your opinion is on my situation. Do you think by doing this I am preventing a clogged DPF? (My car has done 350.000km at the moment of writing)
Kind regards
Hi, the regular fast highway driving is helping to keep that DPF warm enough for good passive regeneration to take place a lot of the time. However with 2 glow-plugs out of action, you are not going to get that DPF up to a high enough temperature to get the most possible soot burnt off. The difference in temperature is more than 100 degrees C with those glow plugs operating.
@@StevenBTuner Alright, thank you. I will put it on my to-do list.
Hello Steve, im having a recurrent DPF soot blockage, so I had to force my BMW 320D every 3 days driven in motorway. I do 18mile journey one way normallly then I take motorway going home 24miles because of this.
My question is, I dont have a glow plug issue popping up in the scan and the soot normally goes down to 6grams-10 during dpf regen but it builds back up quicker.
I got no other scan errors coming up aside from the one I havent said yet, which is the Air to Egr maximum mass air flow thing. which could indicate I had a leak hose or leak somewhere in intake manifold, im still searching for it. Can it contribute to bad dpf early soot build up? thank you.
If any engine systems are having trouble then the DPF regeneration can be cancelled - so it can be glow plugs, EGR valve, turbo, MAP or MAF.
@@StevenBTuner thank you for the reply Steve. I dont have glow plug issue but will def look at cleaning and checking EGR valve, MAP and MAF.
do you know what should be the normal back pressure in the sensor before the DPF, I saw people before talking about it, that it maybe faulty or block pipe there too. just wondering if you come across that one in the past or heard of?
Hey, I have a question regarding my 120d from 2008. A long time ago, I cleaned my DPF using your chemical method, which has proven to be very effective still.
Two weeks before my trip to Iceland (where I am now) my glow plugs failed. I replaced all four of them including the control unit and have driven around 3.000 km since. The system was working fine again after I replaced the glow plugs.
Around 700km ago, I hit a chunk of ice which shredded part of my bottom protection plate. After around 800 km since I hit the ice I got a DPF light. After reading the data stream with my OBD reader, I found out that the temperature was not getting over 510 degrees, no matter how quickly I drive. (Max allowed speed here is 90kmh and I attempted 120kmh for a short duration for testing purposes).
My hypothesis was that because of the missing bottom plate, the heat could not be contained well enough. That is why I spend yesterday afternoon improvising a fix which I’m sure has a similar form fit function. However, afterwards something strange happens.
When the car was NOT requesting regeneration, sometimes it attempted it anyway, quitting again after reaching 530 degrees. (Indicating my fix worked). But what’s more crazy is that now it IS actually requesting it, the temperature will not go above 510 degrees anymore again.
The outside temperature is 3 degrees Celsius. I don’t really see that this is too cold. The state of my DPF should be fine, the glow plugs and control unit are both new and the protection below my engine is proper again.
Any ideas? Current back pressure at 90-100 kmh is 200 mBar. I have 800 km to go to get back to the boat and get to Denmark, where I can drive on the highway and the temperature is > 10 degrees. If you think there is nothing much I can do, do you guess I could make it till Denmark without causing damage to my engine (which has done a loyal 423.000 km of service already).
Kind regards
Hi again! :-) Iceland sounds awesome - I'll have to get there one day! Let me know if you are going through Aalborg and we could grab a coffee. Anyway, back to the DPF, hmm, they are not really designed to be unprotected or to endure thermal shock, so there is a chance that is was cracked when it was in contact with ice. Other possibilities are the temperature sensor was damaged and is not reading quite right, or that the EGR valve is not quite fully closing.
Thank you for your reply. As a matter of fact I am indeed passing through Aalborg this Saturday around 13:00 and I think I’d love to stop by actually haha. 👍 how can I contact you privately?
Regarding your DPF thoughts. It’s difficult to draw conclusions at this moment but I can imagine the things you are saying so thanks for sharing your thoughts. I’ve driving around 600km since I written my previous comment. The car is constantly trying to regenerate and stays around 510 degrees (hence never finishing the cycle). The soot deposit seems rather stable luckily but fuel efficiency obviously isn’t great. I do have a feeling I’ll be getting home safely 👍
@@woudjee2 Hi, you can send an email to steven.b.tuner(at)gmail.com. You will probably be okay to drive home, but doing a visual inspection when you can will be a good start in the diagnosis. A DPF that never fills up with soot is never a good sign.
ECUs are usually programmed to turn off regen, when there's at least one active fault code, related to the engine. That includes the glow plugs. So DPF gets clogged as a result of regen not happening, because ECU thinks it shouldn't happen, rather than because of a glow plug is not heating up the air/fuel mixture.
Exactly right! It is why that you will get a blocked DPF fault along with every other engine fault - and it is almost never the DPF that is the underlying issue.
@@StevenBTuner great job with the homebrew chemical DPF wash. Must try this on my beemer.
I know this is old video, but if you have problems with glow plugs and changed them and problem is still ocuring. Try fix glowplug plug relay. You can slice it open, get rid of the gel, and resolder 4 exposed wires each for one glow plug, commonly they broke and check 3 other smaller one for controling the relay and just silicon the inside.
Hi, thanks for watching! If all of the glow plugs stop working at once then it is definitely worth checking the relay/controller first.
My n47 has got codes for egr stuck open. dpf lifespan is dead and glow plug cylinder 1. Iv only just bought the car so I don't know how long its been like that. Have I bought a ticking time bomb?
Hi, clearly those things scared the previous owner into selling, but none of them are too hard to fix hopefully. The DPF will clog up very quickly without a working EGR valve, and it might be best to swap out all of the glow plugs as once one fails, the others are not far behind - and they are not that expensive (get the car nice and hot before you try and loosen them). Once those are done you can reset the DPF lifespan and see if it regenerating, and how often - and that will tell you if it really is end of life. End of life really means: 'needs the ash cleaned out' - so you can follow my video on that. All the best with the new car!
Thanks muchly for the quick reply. Yes last mot it failed because it had eml on. Im guessing they cleared codes then put it back through. That was 6k ago so its probably been like this since. However she starts first push of the button bit Lumpy for 2 seconds or so then she's ok, iv ordered 4 bosch plugs all filters oils etc. So im hoping a good service will get her up and running sweet. Shes at 155k though, but shes a good little car tbh other than the obvious
I think the term they use is to decat it ....wont decating and completely removing that DPF save you from problems of blocking up?
No and firstly the term decat is reffered to removing the catalytic converter also if you remove the dpf you probably wont pass inspection since a lot of black smoke can be seen out of the exhaust
Having same problem with focus 1.6.disel
Hi, thanks for watching! If you replace the glow plugs yourself then the best advice I can offer is to get the engine really warm before you do the work - that way they are a lot less likely to break off.
I have a 2018 Jaguar F-page with 2.0 Diesel. I had a message on the dashboard, "Diesel Exhaust Fluid dosing malfunction. No engine restarts possible in 175 miles " i also have a engine code 0674 , Cylinder 4 Glow plug circuit. Do you think when replace the Glow Plug, it will take care the DEF malfunction ?
Hi, you will need to connect a good OBD2 reader to see all of the fault codes. The glow plug may be a factor, but it might not be the only factor.
@@StevenBTuner ok. i just happened to have another code P26CB and it doestn't tell me much . do you kno what these are?
Well, today i change glow plug, four, for my ford focus, with 1.6tdci 109hp.
My ford have 107000.
Now, i think that dpf turn make regeneration.
Hi, thanks for watching and all the best in getting your car back to full health!
Hi, I have a vw golf gtd. I have a glow plug fault and my dpf is constantly regenerating but never finishing. Around 70% of my journeys. You say the dpf will not work without the glow plug. Could it be mine is constantly trying to regen due to this??
Hi, different cars are programmed in different ways, and it depends on the year too. If the regeneration is not completing it is often because the temperature isn't high enough and this can be due to either the EGR valve not fully closing, too much oily soot in the intake or the glow plugs not working - but it is often more than one thing!
Can you tell me good OBD scaner for the erors.Wich is not to expensive ?
Hi, thanks for watching! The best value low-priced OBD2 scanner I have found so far is the Autel MaxiAp AP200 - I think there is a link in the video description.
@@StevenBTuner I am very grateful. And you have a great greeting from Montenegro! Videos are great!!!And I to have a bmw 320 d 2005: P
@@vladimirpajovic9550 A great car! Hi from Denmark.
Hej Steven.
Er du fra Danmark? 😅
Jeg står nemlig med et problem med mit partikelfilter i længere tid (E60 530D LCI), som jeg har renset 2 gange. Men bliver ved med at melde partikelfilter fejl. Nu kan jeg fået en rapport med fejl på alle 6 gløder + oxygen sensor.
Kan det være gløderørene?
Hi, there a lot of engine errors that will stop the regeneration from being activated normally - which will result in a blocked DPF over a few months. It sounds like you need a new glow plug controller / relay as well as a new oxygen sensor. Once those are working then the DPF regeneration will work again normally. Hi from up Aalborg way!
@@StevenBTuner Tusind tak for dit svar! Nu har jeg skiftet Glow plug relay, stadig problemer med regen.
Jeg glemte også at skrive at den melder fejl på “Throttle Valve Actuator (43E2). Kan det også være et problem for regen?
It could be. The engine ECU wants almost everything to be working well before it will do a regen.
The reason I'm here is because I discovered at least one glow plug failure a couple weeks ago, and yesterday I got the DPF error. That is too much of a coincidence for you to not be correct. I plan to replace the glow plugs soon. I hope that by doing that, it will take care of the DPF on its own.
Hi, I hope you get your car back to full health soon! I am interested to know what car you have, and how many glow plugs have failed - as another viewer has mentioned that one glow plug failing on their car wasn't enough to cause problems, so maybe it takes multiple failures for some models.
@@StevenBTuner E70 X5. OBD scan indicates only 1 has failed. But maybe it's not 100% accurate.
Many thanks for that information! There are usually separate error messages for each failed glow plug on a BMW (whereas some other manufacturers may give a different kind of error like 'glow plug system low voltage'). If you ever go from a working system to 6 failed glow plugs in one day then it is most likely the glow plug controller that has failed.
Hey I like your presentation manner Steve !. Can't pick your accent. It it Melbourne ? Or were you born in the UK or Kiwi and emigrated ?
Regardless, I thank you for your lovely videos. Thanks matey !
Hi, thanks for watching and for the great comment! I'll steal a quote from the movie 'Highlander' and say that "I'm from lots of places"
Took my car to the mechanic as there was a lack of power, they said the DPF was clogged and cost me $300 to clean it. i still have no power and they they're saying its the glow plus. was it even blocked in the 1st places or they scamming me?
Hi, a DPF can be blocked up by ash due to old age, or it can be blocked up temporarily with soot due to some kind of failure that is stopping the normal regeneration process from running that would burn off the soot. If your car has 160,000 miles or more on it then the DPF was probably in need of a clean regardless of everything else. If your car had good power after the clean, but after 500 miles has lost the power, then it could be a system like the glow plugs that is not working, or an EGR valve that is not closing properly or a big boost leak in an intake pipe. If the clean made no difference at all then the issue is probably more likely to a turbo actuator problem or another turbo issue like a clogged or broken turbo VNT ring. With a turbodiesel engine it is quite common for their to be multiple issue before it is noticeable that something is wrong.
Hi, I have a Tata Superace 1.4DLE turbo diesel. I had a slight runaway engine but managed to prevent severe damage, for some time I knew my glow plugs were faulty, struggled to start in the morning, then a knocking noise on idle but when I Rev it goes away. Then it started to smoke badly, white smoke and very strong smell of unburnt diesel. Then the runaway took place, I managed to stall it in under 6 seconds. Sent it to the mechanic, new turbo, intercooler flushed, injectors serviced, oil and oil filter changed, get the van back and it's pouring out white smoke on idle and the knocking noise is still there. Is that because I haven't done the glow plugs yet? Please help me as I've spent so much money on it already, and not sure if the glow plugs will resolve it. Thank you.
Hi, that's a difficult one. It could very well be that the glow plugs are causing part of the issue, but maybe not all of it. I'd start with a compression test.
@@StevenBTuner Yeah that's what I was advised to do, however I did contact the dealership from where I bought the van from and after explaining the whole situation he says that it could be the diesel pump timing that is out which is causing the excess smoke and the knocking which is known as a diesel knock from the excess diesel. Or it could be the cam belt timing or valve timing. However, I will get that checked up and will be posting an update here for you so you can maybe make a video on this situation which might help others in the future. Glad I came across your video though, great advise.
@@pure_relaxation797 All of those 'timings' are electronically monitored - there has been no manual adjustment of them for 25 years or more.
Hello,
The car is BMW 318D N47, 2008. I had three glow plug DTCs 4A5E, 4A6E, and 4A54 -- after changing the glow plug relay two of three of them have been corrected.
Now only one DTC is active 4A54 and it is linked to the glow plug. Can this DTC cause DPF active regenerating process fail? Thanks.
Hi, thanks for watching! Without all of the glow plugs functioning, the engine ECU can not fully control the exhaust gas temperature - which it needs to do to control the active regeneration. If you are going to replace one glow plug then I would recommend doing them all so that you won't see any glow plug issues for another 100k miles or so. Make sure the engine is nice and warm before starting the job as this will help them come out without snapping off. All the best in getting your 318D back to full health!
@@StevenBTuner Thanks for the suggestion. After I've changed all of the glow plugs, all errors were clean, but it seems like I'm having another issue after doing it. When I do cold start the car starts good, but the RPMs are fluctuating, going from 1100 to 1000 or even 950 and then getting back to 1100 which is the correct RPMs value at the cold start this takes like 10 20 seconds after that everything seems to be OK.
Is it possible that the glow plugs are not tied up enough and maybe the engine is losing some compression? Or do you maybe know what could be the reason for this strange behavior?
Thanks in advance, Daniel.
@@dbdb4665 Hi, there are a few things that could cause that, and the most likely is the EGR valve or throttle valve not opening and closing like they should when the car first starts (due to soot buildup). If they are fine then one or more bad fuel injectors can easily do that too. If you think that the glow plugs may not be in fully then it is pretty easy to check for carbon residue that will have leaked past them. While engine compression can be a problem, it is sort of way down the list of possibilities for these engines.
Can the mild knock sound of a bad glow plug damage the engine when it's cold outside? Like the car starts fine on 5 glow plugs instead of 6, but can that one harm the engine and in which way if so? How long can it be left untreated if the car does at least three hours of active driving every single day?
Hi, the unburnt fuel will eventually create carbon deposits which can make removing the glow plugs and fuel injectors more difficult, and will also block up the holes in the fuel injectors. So it more of a slow death type of thing.
@@StevenBTuner Thanks a lot, appreciate the time.
Can the glow plugs be tested without pulling them out? Like with a multimeter or something like that. Is that reliable?
Hi, thanks for watching! Unfortunately it isn't a good enough test to guarantee that the engine computer thinks that they are good. Of course it doesn't hurt to do a quick test like that to help you to see if there is a wiring fault instead (for example).
Yes, they can be tested in place. Sometimes easily. By the plug, that connect to the glow plug relay. Usually that's the easiest access point. On some cars access to the glow plugs tend to be a nightmare.
On the glow plug relay socket, there's a very convenient, direct connection to all the glow plugs in one place! So with ignition Off and a multimeter, set to ohms.
- Connect one test lead to a good ground.
- Connect the other lead to one of the terminals that lead to the glow plugs.
In this particular case polarity don't matter! Test leads can be interchanged.
Depending on model & make, glow plug values tend to range between 0.8 and 1.4 ohm's. If you don't have the specs of your particular model. Just make sure the reading is steady and within the same range among all. No connection mean they're, broken, surely ready to be changed.
Testing on the plug socket has the added advantage of simultaneously testing the wire and connectors between that measured point and the glow plug itself! further testing is only required if negative result. Otherwise that's enough for most applications.
- Make sure to NOT touch the live wires! Which can also be tested with the multimeter set to dc voltage! Usually the largest terminals on the plug...
Cheers
My exhaust pipe is crystal clear. Yet, i get the "dpf failure" message on my infotaiment display. Is it clugged? What should i check defore changing the dpf
Hi, thanks for watching and commenting. You will need to connect a good diagnostic unit to your car (MaxiAp AP200 or better) in order to get a full list of the manufacturer specific error codes. A clogged DPF usually follows on from one or more other failures such glow plug or EGR valve failure, so the underlying issue needs to be corrected before the DPF regeneration will work again. Best of luck getting your car back to full health!
@@StevenBTuner Thanks! I hope it will regenerate again . It still pulls ok . The DPF must be water cleaned when the engiine light is on or when?
Hi, if your car is still running well then it probably means that the DPF is getting hot enough to keep clean through passive regeneration, however it is best to find out what the error really means so that you can prevent future clogging. It is really only necessary to take the DPF out for cleaning if it has reached the end of its service life and is clogged up with 'ash' - but you will need to get to the full error code before you can be certain of that. You wouldn't want to take out the DPF for cleaning if all the car was trying to tell you was that a pressure sensor had failed for example.
@@StevenBTuner Thanks. I will diagnose the problem today , fix it and hopeluffy my old bmw will make its thing
Glow plugs are not energised in regeneration. Egr closes and raises combustion temperature, fuel is in injected on exhaust stroke and raises ex gas temp. Failed regens are usually attributed to failed thermostats and any air /exhaust sensors ie maf, egr, etc.
Hi, thanks for watching and commenting! There are a few different methods used to achieve regeneration, depending on the car maker. Which manufacturer/s are you referring to with the system you have described?
@@StevenBTuner bmw. Ps you have active and passive.
There is some variance even among BMW engine generations, so I will probably have rename this video title slightly to reflect the engines that it applies to, and do a separate video to cover the others.
I believe this is true however i did find in the help text in ISTA that on the N57 the DDE uses the glow plugs during low engine loads to increase combustion temps which could in theory help the DPF if they are still in use during the regeneration cycle - no mention of that though where it lists all the uses of the glow plugs.
@@stupoo27 combustion temps are high when ecu does a regeneration as the threshold for regeneration is 75c, the info you read will be at low engine temps. Furthermore the gaskets are a one time use, did you notice any oil residue around inlet manifold.
Great video!..gotta USED opel zafira tourer cdti 1.6 ecoflex, 77/136, 2016...two monts ago a new dpf on 170000 km..this week new plugs. THE opel book says two pressure sensor plugs and two normal one..today .mechanics check the plugs..currently driveing with all 4 normal., without pressures sensor?!. Price for normal 20euro , Prices for pressure sensor 200 euro...WHOM TO BELIEVE?...Did previous owner do sth or opel books are wrong?...did he put normal ones instead of expensiveone?..is that possible?...thats why my old dpf died...hmmm..
Hi, you'l have to connect a good diagnostic unit like the Autel AP200 or better to get the answers - if the sensors are reading correctly and the regeneration is scheduled as it should then there is no problem :-)
Hey
So you mean, the glow plugs may still work even after that the engine is started.
Cause my car SOMTIMES have high rpm on idle, about 1000 rpm and there is white smoke comming from between the turbo and th dpf and the power is going down and there is a bad knocking sounf from the engine, and that happens only sometimes, could it be glow plugs?
I cleaned the dpf, changed the egr and the injectors and still have the same problem ::((
Hi, on most modern diesel engines the glow plugs are an integrated part of the emissions and regeneration systems, so should definitely be functioning correctly.
@@StevenBTuner so do u think that the problem may be the glow plugs?
honstly i will sell the car if the problem is not solved soon, cause i payed a ton of money for nothing 😄
Hello, i have a 1.6 tdi with one glow plug malfunction. The engine creates continue smoke like a old steamtrain. I have placed a new dpf filter but stil smokes like hell. Could the glowplug be the reason?
Hi, the engines can be fussy about a dead glow plug and can the shut down the DPF regeneration as a result - so it always good to have all of them working. However, the glow plug on its own won't cause the smoke (except on startup) so I suspect you have another issue as well. If your old DPF was full of oil then your turbo is probably leaking. Check your EGR valve for blockage and operation by taking off the inlet pipe and looking at it when the car is idling. Next is to check the fuel injectors.
@@StevenBTuner i was thinking that with the bad glowplug regeneration tries to start and injects fuel, but wont burn due the bad glowplug causing a mixture of exhaust gas and unburned fuel, causing the smoke. Today the plug will be swapped. We will see 🤞
Ok, so, the glowplug is replaced. The smoke didnt go away. Then the regeneration warning lamp came on the dashboard. I made a 30min drive in 4th gear with 100km/h cruise control. Now the problem is solved
Fingers crossed it behaves for a while!
@@StevenBTuner i'm still driving without any issues. For me it was the glowplug what caused the smoke.
Hello I have a ford transit custom 2014. Three weeks ago engine management light came on followed by engine malfunction service now.
Code p2463 which is known for blocked DPF. So called dpf cleaning services they came to my place and cleaned it. But the engine light came back in 2 days. Then I took it to a garage. They said its temperature sensors. So I got them replaced but no luck... Problem still there..
Funny thing is they knew that there is glow plug issues as well but just ignored it. They showd me on their device that 4 glow plugs warnings. But I never had any starting problems with it. Now I am nearly £1000 down and problem is still there.
I bought this van 3 months ago privately so no warranty.
If any one can advise would be helpful. Thanks
Hi, thanks for watching! That error message could be caused by differential pressure sensors failing rather than the DPF temperatue sensors, but of course it should be diagnosed by someone familiar with your vehicle first. All four glow plugs failing usually indicates that the glow plug controller or relay has failed, rather than the actual plugs, but once again it should be tested before replacement. Long gone are the days when glow plugs were used to just start a diesel vehicle, and unless it is below freezing they won't even get used for that!. Now they are an integrated part of the pollution reduction system, and work in conjunction with the EGR valve to ensure smooth running, low pollution and efficient regeneration of your DPF. All the best in getting your vehicle back to full health.
Hi. Did they checked your Fuel Vapouriser for blockage/glow plug failure(or fuse)? Fuel vapouriser located just before DPF.Any other coded Along with P2463?
@@egorkin1982 I have codes p2463 and p0674 on all 4 cylinders
only the power train light shows up in amber on the dash of my 2013 transit
@@tanaarcher3258 P0674-Cylinder 4 Glow Plug Circuit/Open(Faulty glow plug in cylinder number 4) does NOT affect to DPF regeneration. P2463-Particulate Filter Restriction - Soot Accumulation (Bank 1) restricted DPF due to soot accumulation.
@@egorkin1982 it says cylinders 1, 2, 3 and 4. Is it likely that all 4 would need changing at the same time? And a new dpf filter needed all at once? I have a feeling im being ripped off.
Hi! I have seat Ibiza 2011 1.2 ecomotive. It’s dpf light was on and now glow plug light is flashing also it’s power is low now. is it possible if I’ll drive it on motorway for more than 30 min will fix this? Please help me out this is my first car.
Hi, it may help temporarily, depending on the underlying issue - and if you add some DPF cleaning additive to your tank it will help burn off the soot even quicker. But to get active regeneration working again you will need to address the underlying cause, and in your case the first possibility is probably the glow plug relay / controller.
@@StevenBTuner thanks for the reply. I just had my glow plugs checked and the guy said they are fine. He said there’s a problem in egr and he needs to do the dpf regeneration. He quoted altogether it’s gonna cost around £280. Do you think it’s good to spend £280 on this because I feel my car is losing speed? It’s reviving but it's not catching enough speed.
Hi, EGR issues can definitely stop the regeneration - so it is not a bad first thing to fix. Mechanics like to have the issue 'fixed' when the car leaves the shop, so I can understand why they would do the forced regeneration - but you could also do a 2 hour drive at 80+ km/h to passively burn off the accumulated soot and encourage the active regeneration to occur.
I have a 435dx and using Btool i can see the DPF is almost full (50+ grams of soot). I requested regeneration via the app and it worked where the EGT's got up to 350-400c but it only reduces the soot by a little. So i then did a 45 min run on the motorway and requested 5 regenerations and got it back down to 10g. Thing is that my partners car during regeneration gets to 500c very quickly and burns off quickly so i seem to have some problem where the DPF is not getting hot enough during the ECU requested regenerations.
I have noticed that i have a glow plug fault that only shows when you use an app to view the faults (no EML) thats saying the resistance of glow plug 1 is outside spec. Is it possible this glow plug is shot and its lowering the temperature of the regenerations? I may just replace them all as the car has done 100,000miles
Thanks!
Hi, thanks for watching and commenting and providing some very good information! There is a chance that on your particular car it takes two dead glow plugs to stop the regeneration cycle completely, but having one dead is messing things up a fair bit (I am planning to test this in a future video). Although you probably only need to replace one glow plug, I would say that it is not a bad idea to replace them all because they are not very expensive for Bosch branded plugs, they take a bit of time to get to, and after 100,000 miles they can get very very stuck! When I replaced mine I came very close to breaking 2 of them off, which would have added hours to the job as well as requiring an additional tool. BMW don't use any lubricant on the threads, but if you want to ensure that they are removable in future then a smear of Mercedes-spec ceramic grease is a good idea. If your glow plugs don't want to come out easily then there might be a lot of carbon buildup, so lightly using a glow plug reaming tool before inserting the new plugs could also be a good idea. Good luck getting your BMW back to full health!
@@StevenBTuner Thanks for the reply! Im having a look at a full set now and will try to get the Bosch ones
The factory installed glow plugs are Beru, so you are getting OEM quality with either brand.
You should see 600c on regeneration. You can request a regeneration but not force one.. I think you are seeing a passive regeneration. Temps over 350c are classed as such. Glow plugs don't stop regeneration. Interrogate your dpf pressure sensor for correct values.
What are your coolant temps when cruising on motorway?
Hi Steven, i got 320d e90, scanned it and got two faults 4522 Heater plug monitor not identical and 452A particular system faulty, the mechanics saying nothing to worry about it just take it to highway and it should get cleared but it isn’t. Any help please? Thanks
Hi, I hear that kind of thing all of the time! Doing a highway run will get some soot to burn off due to passive regeneration - but is only a very temporary fix. For the proper active regeneration to take place you will need all of the main engine systems to be working well. Many diesel cars use the glow plugs as part of the active regeneration cycle, so there can't be any errors. The 'not identical' error is a bit misleading as it really means that a glow plug is failing or that the controller/relay is failing. The best plan is usually to replace all of the glow plugs and the controller in one go so that you can forget about them for another 10 years...
@@StevenBTuner Hi, thanks for your time and responding to my question. I have managed to perform regeneration and scanned it with Crista. Now soot level is 2.03g but the codes remained after few tries to clear them. I was hoping that 452A code should get cleared after soot level is so low but it remained. Any advice on that please? Thanks
@@MrMzhashmi84 Did you first clear the code manually?
@@amy40c yes, many times but it comes back next second
@@MrMzhashmi84 Hi, if the code remains then you haven't fixed the underlying issue yet.
I do NOT recommend modern Diesels for suburban short trips as the Emissions complexity and modern direct injectors & piping etc. are way too expensive when it goes wrong and it will. Every technology has it's correct applications.
Very true!
BM engineers should take a lesson from French ones😀. 1.6 hdi (scared of changing glows 100k miles ago) still works with no issues with 180k on the clock. Ones every two weeks need a motorway (highway)walk😁
Hi, there are very little differences between the glow plugs in German and French diesel engines that are made around the same time, so they can all last a long time. My feeling is that it is probably better to replace them every 10 years regardless of whether they are working or not, because if they get too old and rusted/corroded in place then they have a bad habit of snapping off when you do finally need to replace them, which turns a 30 minutes job into an 8 hour job.
Hello, so you said that if a mechanic tells you that we will replace the glow plugs at the same time then don't use that mechanic again then you went on to explain the importance of glowplugs that work properly and that they do more than just start the car, they help the dpf to work properly. Was that a mistake you made or did I miss the context of what you were saying. P.s. like your style of presentation. Keep it up mate.
Hi, what I was trying to get across is that it is probably not the best mechanic if they replace the DPF unnecessarily and then cover it up by incidentally doing the job they should have done first to correct the issue.
Lot of misinformation here. On bmw engine air/fuel ratio affects combustion temps. Glow plugs have nothing to do with regens. BMW own technical information states this. Ive had glow plug errors for the last 10k miles on an m57, regens fine.
You need:
Temps above 86 celcius
No intake/exhaust faults
Oh and more than a couple gallons of fuel, driving speeds above 30mph/50kph
Hi, thanks for watching and commenting! If you have a BMW technical document that states that glow plugs are never used in BMW cars with the M57 engine for the purpose of intentionally increasing exhaust gas temperatures to aid active regeneration in conjunction with a post injection pulse, then please post a reference to it here (or the whole document if you like - I don't mind). It is very easy to test whether glow plugs are needed in your engine - pull out the fuse, and report back after 1000 miles. What I would be more interested to know, however, is exactly how many glow plugs being out will stop the regeneration process for your engine. Being a 6 cylinder engine, there is a chance that it could still work okay with 3 or 4 plugs that are non-functioning, so if you are curious enough then pull the wires on 4 glow plugs and see what the result is - I'd love to know the answer, but I don't have an M57 to hand at the moment to do the test myself.
@@StevenBTuner not the greatest screenshot. Theres a separate screen showing the air/fuel ratio is the driver of increased temps, not glow plugs on bmws.
As for number of glow plugs, all 6 and has been that way for 10k miles. If glow plugs affected regens, I've had encountered a problem by now.
www.dropbox.com/s/ljnvu8zg0da5iwa/m57regen.png?dl=0
Hi, thanks for the clarification screenshot - I'll go through a few of the things as they relate to your particular car (nice car btw). As I mentioned before, what your car is doing is a post injection pulse (1 or 2 pulses). These occur during the exhaust stroke (as per my video) so they are not the same as a change to the air/fuel ratio at all, because as you can imagine, if your car were to add more fuel at the normal injection time then it would make more power suddenly, which would be very bad from a driver experience point of view! Your BMW model is one of the first to have a diesel oxidation catalyst (DOC) integrated into the DPF housing just before the DPF material - and one of the things a DOC does is to ignite any un-burnt diesel fuel so that it doesn't end up in the air we breathe, but this means that the engine computer can also deliberately send un-burnt fuel to the DOC (via those post injection pulses) in order to raise the temperature in the DPF, so that an active re-generation can be performed. At this point you're probably wondering what this has to do with glow plugs... well, they are still used on BMWs like yours that have an integrated DOC. Without glow plugs operating your 335d active regeneration might get to 550 degrees C, or if you are on the motorway it may very well get over the magic 600 degrees C threshold for optimum soot burn-off - however it will be a very slow regeneration using a lot of extra fuel and probably not clearing all of the soot away. With the glow plugs fully functioning, the engine computer can quickly raise the DPF temperature to 600, 700 or 800 degrees C to burn off the soot as quickly and efficiently as possible, saving you fuel, and making sure that no power-robbing soot remains. So while your car can function well enough without glow plugs to get to its yearly service, it is not something you want to leave broken.
@@StevenBTuner
Ive taken the screenshots from ista and put them in the below folder.
www.dropbox.com/sh/y7ovd9bvs8t1rv2/AACzQPEcEIRPQqWWlBe5mjsia?dl=0
Under the dpf documents it highlights the conditions, faults which will prevent a regeneration and the process involved with regards to active and passive regen.
You will notice it states post injection and throttle valve affect exhaust gas temps.
Ive included screenshots which state the procedure for the glow plugs. All procedures occur at temperatures below 30 celcius.
In addition, my real world experience involves clearing the codes whilst warm (ie 80 degrees) and going for an extended drive to trigger a regen. The car regenerated as evidenced by both the ash mass/soot mass readings, and the distance since last regen stored in the dde. When I rescanned the codes whilst warm, I did not have any activation errors which otherwise occur during startup.
If glow plugs are involved in the regeneration process, why am I not seeing faults relating to activation once the car is up to temperature and actively regenerating?
Diesels are more trouble than they're worth now. Next motor purchase will be petrol powered.
They're not so bad - just a bit misunderstood! :-)
@Toryalai Khan Hi, that isn't really an option for most of the world any more - older diesels are starting to be banned from cities or taxed out of existence.
good video but please speed it up a bit
Hi, thanks for watching! Check out more recent videos for a faster paced approach.
I would never expect bmw owner to have this kind of diction.
Dare I ask...what do you expect BMW owners to be like where you live?
the constant camera angle changes is distracting
Some people loved it, and most people hated it - so I don't do it in later vids. Thanks for watching!
Try to look at the correct camera.
Haha, and take away all the fun? Later vids only use the one camera...
very well explained the subjects in your videos, but god, please dont try and launch a presenting career using these videos, if you are trying to then you need training, please search youtube for this
Hi, thanks for watching and commenting! The idea was to be noticed, and that seems to have worked - but not to everyone's tastes, haha. Compare that vid with the 2 videos from this year, and I suspect you'll notice a difference.
@@StevenBTuner sorry, after posting that comment i must come across as a know it all, it was not meant to be offensive,
No probs! I would much rather hear an honest opinion, than for someone to just click away onto the next vid without a word. My new year break was used to go through all of the things wrong with the first year's videos, and see what I could do to make them better as I was getting an enormous drop-off in the first 15 to 20 seconds of each video, of up to 60% - and that's only the pre-intro! My latest video has around 20% drop-off at 30 seconds, so it is a big improvement already, but there is always room to make things better. If you would say what you think is one thing that could be improved in the video I released today, then that would super :-)
@@StevenBTuner as i said or should have correctly said excellent info on the vids, presentation is a bit distracting, i can get you may be trying to make your vids stand out or more interesting so i will leave that to someone who is at least trying to do something, keep up the informative vids
Hey I think you have potential. So I think you need to stop trying to be interesting. Just talk to the camera just like you would talk to someone in a conversation. It’s like awkward atm.
Hi, thanks for watching and commenting! I'm making lots of changes for the new year - especially to the intro section, which has annoyed a lot of folk who would otherwise appreciate the content.