BMW 116i misfiring, error 29D0. Fault finding and repair.
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- เผยแพร่เมื่อ 5 ต.ค. 2024
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Hi
This 116i came to me with a rough idling and what looked like a misfiring...
On the engine ECU the code 29D0
Follow me on this video to find out what was the problem and how to resolve it.
Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!
![[UNCUT] “บอสณวัฒน์” ลากไส้!! ใครหนุนหลัง "แม่ตั๊ก ป๋าเบียร์" I คนดังนั่งเคลียร์ I 30 ก.ย. 67](http://i.ytimg.com/vi/QlD7mU2KKRk/mqdefault.jpg)
Thanks a lot for your videos. After replacing my injectors, coils en bougies on my 320i n43 I got a rough running engine en misfires on cylinder 4. Due your video I coded the new correct values en removed the fault code. Engine runs smooth and no more misfires! Thanks a lot!
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That's great!
Thank you for watching and for your comment!
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Just replace injector 4?and everything ok?
Nice vid, had a similar issue on BMW 535I GT 2010 cylinder 1 was misfiring. Owner was told he needs to replace all six nozzles, he asked me to take a look which I did. Took out nozzle out found out it had carbon deposit blocked the tips. Used a pin to clear it, replaced the nozzle and done car ran smooth after wards.
It's all about paying attention to details.
Very true as well...
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As usual, a comprehensive diagnostic approach and a satisfactory conclusion to the problem. Well done. 👍👍
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Thanks!
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This was something new for me . I do a fair amount of injector replacements and coding . I never experienced a misfire due to wrong or not coded injectors . Flow rates off yes but a true misfire never and if I would have that particular car I would do the coding and would be really surprised that it fixed the problem . Great video Luis . I learned something today .(edit) I have had cars that needed to be updated , but this solved rough idling .
Me neither to be honest...
But this one was how it played out...
Thank you for watching and for your comment!
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I’ve seen the same problem. I wish people would leave things alone. Thanks for the videos 👍
Absolutely!
Been through a few lately... that were a mess just because of that....
Thank you for watching and for your comment!
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Another car with low petrol in tank. Low fuel can be a source of other problems.
Thanks for sharing your work.
I keep also saying that... but...
Thank you for watching!
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well done, bit of a tricky one if you don't know that the injector values need to be in the ecu, it won't catch you out next time I know.
No it won't...😊
Thank you for watching!
As Ivan say's always start with vision inspection I think this car is yet another example of the power of visual inspection
Agree!
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Respekt,🤙You're tireless, man.
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Thanks!
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They are old injectors batch number 1 they must be 10 years old i'm surprised they are in balance it will be back lol . great video again
So far so good... but yes... they will not last forever...
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what is it ?
they tried everyone else first then bring the bodge job for you to put right ?
big respect to you for all you do bro should charge double for these jobs
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I really hope u were here in belgium so i can bring my car to you LOL. Nice video tutorials you have! I'm having a bunch of codes with my 520i e61 with the same engine. and i'm getting tired of fixing one and then another one will pop up😵💫 This is one of the codes i have
Thanks!
Hope you get yours fixed...
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That was great one. I keep loving the way u approach the issues.
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Thanks!
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nice as always! they probably destroyed the exhaust in the auction place since they use forklifts to move the cars around lol
Possibly...
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Very good and in depth diagnosis there! ive got a 325i that has rough cold starts, cylinders 5 and 6 always run rough on cold starts, misfire counters go up by allot but it doesnt illuminate the cel, will be pulling my injectors out to see if they are leaking, although spark plugs are always very dry and no smell of fuel, injectors are the index 11 ones, ive changed everything, spark plugs, coils, vanos solenoids and all o2 sensors, no change haha, my final conclusion are the injectors but they are coded correctly... im thinking that since cyls 5 and 6 run the hottest, my seals have gone, if not then il leak check them just to be sure, if not then i guess il just have to cry myself to sleep. 😀
Hi
Hope you find the issue, might worth a compression test just to make sure...
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@@LMAutoRepairs well... today was the day when I finally got all the seals and decoupling rings, and i took the injectors out, only to find them covered in oil as a few years back i had a rocker cover gasket leak, and... absolutely no decoupling rings in all injectors! The csr had the injectors replaced to index 11 under warranty, whoever did it were utter donkeys! Cleaned everything out replaced the teflon seals and decoupling rings on bank 2 and jeez she runs like never before! I think what happened is that there was no seal for the injector bore, the oil slowly ate away the teflon seal and on cold starts it had compression loss, cylinders 5 and 6 being the hottest ones must have accelerated the process as other cylinders ran fine, ish... but yeah problem solved! Ordered three more to do bank one and she should be sorted fully, only took a year to get to the bottom of the issue.
Great results!
Happy for you!
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Nice find, I wouldn't have thought that those numbers on an injector must be a perfect match with what's recorded in the ECU memory, in order for a motor to run.
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Thanks for a really informative video. I've had my BMW E90 318i N43 since 2016 at 35k miles (now 130k) and never had injector issue previously. I now have these fault codes with the car barely idling and just stalling and engine light on:
P311B
2E32 fuel injector, cylinder 3, activation
30AE fuel injector, cylinder 3, activation
I guess all this points to a leaky fuel injector and fouling of the spark plug, but interested you mention the electrical connections to the injector should be checked too.
Is it Ok to pull and replace injectors like this without worrying about the seals?
Ideally you change the seals, but to test you can definitely do it, once you find the problem, you can then replace all the seals...
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My teacher good morning from germany
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@@LMAutoRepairs what about injector 2 why it stay always in + ?
Probably an injector that is not in very good shape...
The guy had an attack when I told him the price of a new injector... lol
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@@LMAutoRepairs 😂😂 i know verygood what u Mean german parts
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Mais um grande vídeo como sempre, obrigado pela tua partilha, um grande abraço
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Obrigado!
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Probably had an engine change? Like the Jag X-type diesel you did a few years ago. Had another engine fitted but the injectors values werent entered into the ECU
Possibly... no background so everything is possible...😊
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i notcied it is index 12 injectors? those are for n54 engine, but not for n43.
also, i noticed you didnt have decouplers on injectors?
Excellent find my friend! Keeping it simple 😊
Thanks Cuba!
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seems like the previous mechanic have no idea about DI injector calibration
Indeed...
Thank you for watching!
Hi LM Auto Repairs, I have a question. I have the 120i E87 with 170 HP and a problem. Sometimes the whole car jerks, but only when it's warm. If I then increase the revs to 3000 rpm at idle, the error disappears, but only sometimes. The fault memory is empty and the spark plugs, ignition coils have already been replaced on all 4 cylinders. According to the workshop, the injectors are also running well. Maybe you know what the problem might be.
Difficult to say...
Maybe live data will be able to help you...
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Luis, the unbutcher! Always fixing other people sh*t shows.
Off topic: topdon as a new scan lineup that seems very promising and the price seems to be good so far. Was the artipad a good experience?
Was not bad... but still prefer the Autel...
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Good video and educational sir 📹👍
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Thanks!
Thank's good work gad bless you
Thanks!
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If we want to send a vehicle to you how do we get to you.
What does the orange clock mean on BMWs
What "ground" You taking about ? DC have a ground ? Must be something new :)
where can you buy injectors for this engine
Hi there ,
A quick question as you might be able to help me!😊 , I have a misfire on cyl2 , tried to see my injectors value and compare them like you did above but noticed that they are all 00000 , went and get them with a camera so I can code them again (I use autel) but it will not let me ( give error on all 4) please let me know if you even encounter this ! Ps :cylinder no 2 has index 11 others have index 8 , thank you .
Hi
Never had issues coding those injectors...
Might not be a must, must I would get all the injectors with the same index...
Have you checked compression?
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@@LMAutoRepairs thank you for your quick reply appreciated, I did the compression test has same values on cylinder 1 and cylinder 2 ( 225 ) seem to be ok..I am going to try tomorrow to code only the 3 index 8 at a time rather than all 4 .. I let you know how it goes . Thank you 🤞
@@thealex7199
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@@LMAutoRepairs hi there , a quick update , I did manage to change the flow ratio all good on all now but the issue continues :( no leaking injectors , change coil pack and spark plugs! Noticed today the Nox sensor not present? It does run very rich as well 23mpg combined. Oxygen sensors seem to be ok equal value on both . I have notice mixture 2 adaptation is -26 ,although I did get few code yesterday after 1 hour of running (002C28, 002C7F) by the way where you based ? Maybe I could bring it to you to have a 👀 . Thanks 🙏
Hi mate I have this same issue with my car, where are you based?
Good dad 👌
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Good morning sir in india side I have one dought ur mxsys lm auto repair logo how to come
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Good fix
Thanks!
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Hi Lewis
I was wondering if you have any plans to build a diy pulse sensor or purchase one from Rotkee to use with a scope for missfire finding or confirmation?
The cylinder stroke overlays are very handy as well.
Possibly in the future...
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Bingooo 🙃.. nice one Luis !!!
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Hello, good evening. I am contacting you to see if you can help me. I have the same problem, I get the same errors, what do I have to do? Thank you

I thought I kinda showed it on the video..
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good
Thanks!
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so what was the problem?
Have you watched the video?
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my car bmw e65 code 29DD appeared, can you tell me the reason?
Fixed itself... that's what BMWs do...🤪
Just joking...
Difficult to tell, but most likely will come back...
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Hi mate where are you located?
I need you please. My car is e82, 2013 plate, 2.0 petrol. Have all valves on engine new, new spark plugs, new coils, new chain. Car is still missfires, “mechanic” is sayings that in time injectors will learn again to work fine but after 1 week of driving car is still showing engine light on after 20 minutes of driving. Where are based if thing that you can help me. Thank you
Which codes is the car throwing?
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@@LMAutoRepairs don't know yeat, I don't have a tester. I will try to find one and I will let you know. THX
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Someone has definitely disconnected or has been messing with that ambient pressure thing
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Hon Many Borgward cars have you been scanning?😃
They seem endless...😊
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Voce trabalha em Londres??Queria resolver um problema do código PO171 no Vauxhall Zafira.Como faço pra falar com voce??Obrigado
Olá
Não... estou bem longe de Londres...
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@@LMAutoRepairs onde trabalhas??Posso ir até vc
Isto é um part time para mim...
Eu não faço trabalhos assim...
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Thanks!
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Question. Wasthis injectors really original ? 😜
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Who knows...
Thank you for watching!
@@LMAutoRepairs original BMW 048 injectors are ONLY with grey colour , product from Continental ( not black ) .
This Fault back after driving 30km . !!!
Not in this case, it didn't came back...
Thank you for watching!
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@@LMAutoRepairs you are lucky. I have exactly the same code the same problem. I changed the 4 injectors with index 11. With 4 coils 4 spark plug. Ecu new 81.2 . First day car running smoothly. After driving 30km like i didn't do nothing same problem same code . Its make me crazy. !!!! Any idea ?
Maf sensor map sensor new . All cables and connectors ok . 2 venus valve changed. 🤯
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should have checked the diesel filters next to the diesel bearings
Checked... they were fine...
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@@LMAutoRepairs 🤣🤣
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Hi
Hi 😘
Bye✋
A little bit definitely. L O L
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Coil is from 2020, date on is yy mm dd
Possibly... I can't remember now when this was recorded... would have to check...
Dad can you do wis me
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maybe 20-02-07=07 02 2020