didn't have to buy a new injector. Just ultrasonic clean it. Did that to my impala. Had #6 misfire for the longest time, checked plug, coil, compression, all good and finally decided to clean the whole injector rail in the ultrasonic cleaner. Runs like a new car now. Even with 600000 km.

@billsmith756

Күн бұрын

WRONG ! BMW uses a Piezo injector and its not possible to refurb or properly clean them - the values change resulting in further issues

Great video Luis. I love case studies like this.. carrying out tests to eliminate probable issues and finding other issues along the way. Fantastic stuff! :) Look forward to your next challenge

@LMAutoRepairs

Жыл бұрын

☺️ Thanks! For watching and for your comment! 👍👍👍

Brilliant job ! I wish i could bring my car to you. I have the same problem on my N43 engine.

The best diagnostic video I've ever seen! Congrats man! I suffer the same with my n43. Lovely, brilliant video, don't stop recording you've helped a lot of people I'm pretty sure!

@LMAutoRepairs

10 ай бұрын

☺️ Thanks! Glad it helped! 👍👍👍

Hi Luis. I’m pleased you managed to finally identify and resolve the rough running of the engine with a set of quality spark plugs. The car overall needs urgent servicing which you have already identified some of the faults. Great video as always. Keep up the good work 😊

@LMAutoRepairs

Жыл бұрын

☺️ Agree... Thanks, for watching and for your comment! 👍👍👍

This engine injection is very troublesome almost every engine with these injectors I have seen suffer from misfire.. I am in the process of diagnosing my N43 for the same issue, I have eliminated coils and spark plugs now that I have swapped them with new ones. Next is the injectors. ->> also wanna say it’s always worth checking the vanos selinoinds as they are cheap to fix (wither clean them or swap them) and could also cause rough run. -> Another one to check is the MAS as this also can cause it.. Good luck 🍀

It looks like injector no.3 is the initial fault which then fouled the plug causing cyl 3. to become wet with unburnt fuel. This fuel will then contaminate the oil as it passes the rings so an oil change is definitely recommended. I hope the wetness in 3 was just fuel / carbon and not oil but this would need to be monitored. great work as usual.

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

@tschuuuls486

Жыл бұрын

And if you just continue driving like this, the fuel will cause the oil to wash away on the cylinder walls and completey ruin the honing, and eventually scratch the cylinder wall. Common issue on AMG engines (M113 with silitech cylinder lining).

GREAT JOB well done best video i have seen so far i have a question for you does the 318i E90 2010 model have vanos non return valves if it has can you locate them for me please thanks.

Morning Luis. Thanks for another Sunday morning vid. Perfect timing as always 🙂👍Gives me an excuse for another cuppa lol.

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

great video i used your video and explanation with my BMW thanks!!!!

@LMAutoRepairs

8 ай бұрын

☺️ That's great! 👍👍👍

I am not trying to be that " smartass " Luis because it happened to me 5 years ago on a Audi but I was thinking why you don't check for spark. Believe you me. I have never forgotten my own neglect. Great stuff Luis. Edit, I just remembered that last year I changed plugs on a Volvo and I drove the car outside without any problem and when the client picked it up only 3 cylinders were working.

@LMAutoRepairs

Жыл бұрын

☺️ 🤷‍♂️ 🤪 👍👍👍 Hope it makes sense... 😉

Another brilliant diagnosis

@LMAutoRepairs

Жыл бұрын

☺️ Thanks! 👍👍👍

Spot on like usual!!!! Well done 😊

@LMAutoRepairs

Жыл бұрын

Thanks! 👍👍👍

I literally have same issues on my 320i And I got new spark plugs put in but I still having same issues, I bet they used bosh plugs and sent me on my way. Amazing video, can learn a lot from this. Well done 👏🏼👏🏼👏🏼

@LMAutoRepairs

8 ай бұрын

😊 Thanks! 👍👍👍

Amazing job , thx for this great videos , you are a very good and pro technician Thx a lot

@LMAutoRepairs

Жыл бұрын

☺️ Thanks! 👍👍👍

Had similar on 118i, who would of thought tiny little differences would have caused this, but they have, when I contacted my go to supplier (SDL) NGK spark plugs where there only choice as to where Eurocar parts, so why the customer was supplied’Bosch’ spark plugs I’ll never know

Good job Luis, dont worry about making the wrong-ish call. I am definitely not your engine guy but the injector leakdown and the oil on the spark plug is surely an issue. You fixed it spot on for now but were right in seeing something coming...

@LMAutoRepairs

Жыл бұрын

Agree... 👍👍👍

Thanks for video Luis👍💪

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

As youve said before.always start with the basics.

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Thanks for a great video and the thought process. I can also agree that the car needs funds to completely fix the problem. The root cause is mechanical, the misfire will return after a while since there's an excessive oil leak in cylinder no. 3, which will overtime cover the spark plug electrodes and prevent it from firing. Another thing that needs to be replaced is the leaking injector. Thanks again for these great videos

@mr.t2585

Жыл бұрын

Agree. Washed cylinder can cause all kind of mechanical problems. cooked rings, valve seating.. And this cheap 10usd china compression tester is a toy. Values measured are always the same, try to borrow or buy good one and then check compression. No way that 3rd cylinder full of oil shows the same 10bar value like the 1st one.

@LMAutoRepairs

Жыл бұрын

Indeed need a better compression gauge/tester... But I disagree that this tester gives always the same results... Unfortunately knowing people and my experience is, that this will not get any more money spent, at least untill it fails again... I also agree that the excessive oil will isolate the spark plug soon or later... The owner was informed and advised of what is needed to be done on this... ball on his side now...🤪 🤪 👍👍👍

Really interesting trouble shooting, thanks.

@LMAutoRepairs

11 ай бұрын

☺️ 👍👍👍

Great video, as have the same issue. The oil that's fouling the plugs would indicate a new head gasket?

Great and very honest video , thumbs 👍!

@LMAutoRepairs

Жыл бұрын

☺️ Thanks! 👍👍👍

Great diagnosis. The Bosch plugs are listed as compatible for these engines (N43) but they're not. It's best to buy the NGK one's from the dealership as there are lots of fakes out there too.

@LMAutoRepairs

11 ай бұрын

😊 👍👍👍

Very good luis👍👍👍.

@LMAutoRepairs

Жыл бұрын

😊 Thanks! 👍👍👍

Excellent video. This is exactly how trouble shooting goes. The manual never tells you that every car comes with a few red herrings. The BMW owners manual never mentions these cars come with a whole trunk full of red herrings. And how smart have we really got when the computer can't tell you one of the oldest motor maladies ever, fouled spark plug?

If you use a fuse loop and an amp clamp also the ignition as a sync you would be able to determine with a scope once the firing order is identified which injector is leaking .That would save you a lot of time and it is accurate.

@LMAutoRepairs

Жыл бұрын

True... But not everyone has a scope... Thank you for watching and for your comment! 👍👍👍

Well done Boss I have really appreciated

@LMAutoRepairs

Жыл бұрын

☺️ Thanks! 👍👍👍

Great video man

@LMAutoRepairs

26 күн бұрын

Thanks! 👍👍👍

Pressure control valve? it could be letting oil from the engine into the airbox/inlet manifold and fouling the plugs, which would caouse a misfire and unburnt fuel.

No need for compression test with that much oil in the cylinder. However, been there, done that. Fowled plug due to bad injectors and or fuel and looking in all the wrong places. Fact is in this type of work we tend to go for the big problems and sometimes miss the obvious. Had a Renault laguna thia summer with a no start condition. Car went around to four other shops and nobody changed the plugs. Put 4 new plugs in it and it started right away. Just wondering if Cylinder 4 will be in this condition soon probably.

Great job👏🏻👍🏻

@LMAutoRepairs

Жыл бұрын

Thanks! 👍👍👍

Very helpful video

@LMAutoRepairs

Жыл бұрын

Thanks! 👍👍👍

I think there is no problem with the cylinders, because the spark plug stopped ignition, back pressure could not be obtained, the pressure at the bottom carried the oil up.

Top video. Thanks

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Brilliant

@LMAutoRepairs

8 ай бұрын

☺️ Thanks! 👍👍👍

Good work

@LMAutoRepairs

Жыл бұрын

Thanks! 👍👍👍

That's why sometimes it's just best to start simple and keep it simple just unplug a coil and swap them around and do the same with the spark plugs if it still misses after that that way there's no confusion.

@LMAutoRepairs

Жыл бұрын

Indeed... I went a bit of track... but got there in the end...🤪 👍👍👍

Friend have the same problem, he has cylinder 1 misfire and also the denox sulphurized..

Good day Sir please make a video resetting dme working hours on e90s or f series thank you

I have a e92 320i, water pump would over run and drain battery, so replaced that, found the ecu was drowned so replaced that, got a misfire on cylinder 4, mixture contoll problems, has compression tests, smoke tests, plugged into a snapon tool thing and just reading misfire on 4, moved coils around made no difference always on 4, bought 4 new injectors, and 4 new plugs, still same issue, massive misfire on 4, pumping out black smoke from the exhaust thats coated my wall of the house throughout all the testing, adaptation resets etc. Getting some new coil packs today, so far ive spent £1500 and still have the misfire. Car is undriveable, just billows black smoke, no power whatsoever. Was also getting a lot of smoke from engine bay under the water pump.....its not the rocker cover gasket as i changed that 2 weeks ago due to what i thought was it leaking....but the smoke may well be from oil leaking elsewhere onto the exhaust manifold or cats. Proper weird. Probably gonna have to scrap it.

@LMAutoRepairs

10 ай бұрын

A shame given up now... 👍👍👍

@johnjones607

10 ай бұрын

@@LMAutoRepairs I know, im completely miffed by it. Im going to pull the plugs again and recharge the battery as thats only 11.6v and the car wont even start, just cranks. Si im thinking maybe a mix of low battery, dirty plugs maybe. If that fails....gonna take inlet manifold off and check the state of the inlet...if thats ok....then im getting a Jag lol. 3.0 v6, bullet proof apparently!

The first step to check a gasoline engine is checking spark plugs.but any way you found the solution just spent a little bit effort.good job

@LMAutoRepairs

Жыл бұрын

And found all the other issues on the way... If I would have started by the spark plugs, would have missed all the rest...🤪 Thank you for watching and for your comment!

شكرا جزيلا

I will try on all your videos if I have to. Please take my Renault espace !

I'll be surprised if it doesn't come back in. Same scenario with the new Audi/VW direct injection junk. Misfires caused by leaky injectors and oiled plugs. Washing the bores with neat petrol. Screws the rings and even cracks or holes the piston skirts. Nothing to really be seen with the boroscope, except maybe a bit oily in the cylinder. Relative compression tests seem to show better than the normal method. Not always shows low compression but oil does find it's way back up and foul the plug and misfire returns. I suppose the excess oil getting up helps disguise during the test. Last one I saw a month or so ago was 19 plate A3 with 19k on the clock. Quality 👍 With regard to the difference in the spark plugs, I've seen bad misfires on diesel land rovers when the copper injector washers are the wrong thickness. I mean like 0.2mm too thick. You wouldn't believe it.

@LMAutoRepairs

Жыл бұрын

Agree that it will come back... Owner was advised, ball on his side...🤪 I have a video for a renault dci, where someone put 2 copper washers on one injector, and indeed was missing... 😅 👍👍👍

If the cylinder was running lean most likely the ignition coil was overworking as a result being damaged.

That slap on the forehead made me laugh my ass off. There has been soo many times that I have done that myself lol

@LMAutoRepairs

9 ай бұрын

😅 And I used that clip many times after...lol 👍👍👍

Sometimes it’s just that simple. Can you do a video of how to code injectors using the autel?

@LMAutoRepairs

Жыл бұрын

I will at the next opportunity... 👍👍👍

Gold

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

I have same problem. i do all things as showing in video but. I’m still struggling with this problem.

Great video, i have the same problem on my n53b30a engine. Its driving me crazy, change the sparks, coils, nox sensor, still check engine light is on, now I order six new injectors, if it still continues to missfire I I'm gonna set him on fire the whole car 😂

@LMAutoRepairs

Жыл бұрын

😅

@shif9992

11 ай бұрын

Hey men did you fixt it? I have the same problem on my car bmw 318i. I did change my 4 spark plugs, 4 coils, air mass sensor and 4 full injector still the car is miss fire on 2 cilinder.... did you fixt it???

@milivojelijeskic7078

11 ай бұрын

@@shif9992 yes I did. It was lambda sensor on exhaust after cat. My car has two of them, for bank 1 and bank 2. For bank 2 was the problem 4,5,6 cylinder. And now I'm mad at myself how didn't figure it out before. When you have this problem its constantly reporting missfire and its moving, sometimes 4th, 5th or sixth cylinder.

@shif9992

11 ай бұрын

@milivoje lijeskic it can be the lambda sensor. But the misfire is not moving form cilinder to a another cilinder. It stays on cilinder 2 for 2 weeks now. Do any have a idea ?

@tamerlanmm

6 ай бұрын

Do you fix problem? I have this problem i can t fix

I heard you saying: resetting adaptation values. Can you explain how you reset the values for this car? Thank you!

@LMAutoRepairs

6 ай бұрын

Done with the scan tool... 👍👍👍

Wish me luck, im chasing an misfire cylinder 1, only under load tho, 2 -3k rpm, plugs and spark done so far, i have injectors next, but after that, stumped

@LMAutoRepairs

Жыл бұрын

Check compression as well... just in case... 👍👍👍👍

@DameAndThatGame

Жыл бұрын

@@LMAutoRepairs im too scared lol

@LMAutoRepairs

Жыл бұрын

😅

I think that they replaced the spark plug and they drove it a long time with it broken and the injector then got a chance to overfuel the engine and over time wear it out when it comes to codes you have to think as the saying goes who came first the chicken or the egg.

@LMAutoRepairs

Жыл бұрын

Indeed...😅 👍👍

hi luis when i swap coils i always swap the plug if i move the fault i then move the coils only back to see it the fault moves with it or not even if a new plug had been fitted move it because NEW stands for NEVER EVER WORKS untill proven

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Are all BMW 4 cylinders like that because they just don't seem to be very good at least the diesels are not but I don't know are the newer ones any better It's just something I've read before.

Hello, I have N43 320i and problem like you, but on cyl2, shaking engine only when cold first start. First 10sec ok, than shaking. More cold, more shaking. If I start engine again, problem is out. Operational smooth values on cylinder 2 goes over -1000 and MIL lights up. New BMW spark plugs (4pcs), swapped coils between all cylinders, new injector, new IGBt transistors in DME. New hydraulic lifters. Combustion space is clean. Now, there no MIL light, but shaking is still present. Cyl2 rough run value peaks about -500 and then calm down after 30sec. Injector 3 is very slightly leaking, but problem is everytime only on cylinder 2. I do everything like you, but no fix. Is normal if cylinder 3 leaking, the cylinder 2 operates with mixture (over -500....-1000....-1200....) for good smoothness? After a 30 seconds all normalized. I am totally confused. Thank you.

@LMAutoRepairs

Ай бұрын

One cylinder poor combustion can affect the next in the firing order... But, have you checked compression on that cylinder? 👍👍👍

@pavelhorak1888

Ай бұрын

@@LMAutoRepairs hello, yes. compression are 15-15,5bar on each cylinder. After all I decide to test the injectors on the tester machine and will see...Spark plugs are quite black, especially on 2nd cylinder, so there is rich mixture.

@LMAutoRepairs

Ай бұрын

👍

Wet spak plug is the damage?

@LMAutoRepairs

4 ай бұрын

Can be an indication of something not right... 👍👍👍

I would check oil level for overful, then exhaust emissions, and suspect oil ring on number 3 🤔

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Ah! Gotta love the gasoline engines. Some sparks, air filter, fuel filter and some oil and you're good to go! 👍

@LMAutoRepairs

Жыл бұрын

😅 👍👍👍

Hi Sir, is it possible to request your service for my car?

Hi,how can i reach you sir.want to ask something about dsg7 dq200

@LMAutoRepairs

8 ай бұрын

Hi I have videos on those... Search the channel... 👍👍👍

I have just bough a used 318i automatic 2010 and it had a yellow engine light. Diagnosed with misfiring in 2 cylinders, needs spark plugs and coils. Also needs water pump change. Exhaust manifold needs refitting as has been worked on before and it is leaking smoke so causes noise. The engine light is not always there, but I could smell petrol from the exhaust. It also sounds like this car. How bad are these faults? if the car company will fix them should I keep the car or try to return it?

@VV-wl8gb

10 күн бұрын

What happened with that car after all?

plug looked like valve guide seal leak

@LMAutoRepairs

Жыл бұрын

☺️ Possibly... 👍👍👍

👌👍

@LMAutoRepairs

Жыл бұрын

Thanks! 👍👍👍

I have a problem in my citroen c4 2016 i was fixing the solenoid elctrovalve finished fixing it , i tried to turn on the engine ,the car won t start a fuse blew up i change it the engine starts but the car give us messages engine and gearbox fault need repair I puted on scanner there are 17 bsi fault so how should i fix this problem

@LMAutoRepairs

Жыл бұрын

The faults should show you the way... 👍👍👍

@gz1719

Жыл бұрын

The transmission stays at 3 eme did the bsi need a reprograming or an electronic fault??

this car might be back soon. the leaky injector would kill the new plugs soon enough just like the ones you replaced and if the owner keeps just changing plugs, it will ruin the engine from fuel dilution at some point

@LMAutoRepairs

Жыл бұрын

Agree... it did not came back yet... But the owner was informed and advised... Up to him... 👍👍👍

@n.shiina8798

Жыл бұрын

@@LMAutoRepairs let's hope he did the right thing. N42/43/46 might be a finicky engine but they're quite good for daily drive car. would be sad if the owner ruined it

So, new head gasket, injector and injector gasket for no.4 injector. Also that catalic is fulfiled with oil.

@LMAutoRepairs

Жыл бұрын

Probably... 👍👍👍

@GraditelMacedonia

Жыл бұрын

@@LMAutoRepairs true, if spark plug is like that...then...

Hi mate I got similar problem but mine is cylinder 4 misfire but only on cold start ones it's warmup up it drives like a dream car please can u help thx?*

@LMAutoRepairs

11 ай бұрын

Hi Have you checked compression?

@dzeremidzeremi4232

11 ай бұрын

@LM Auto Repairs but compression would be there all the time right? Not only on cold start

@LMAutoRepairs

11 ай бұрын

@@dzeremidzeremi4232 Possibly... material expansion due to heat can or does influence compression... You need to check what is failing due to heat... It can be something else, and injector, a coil, a spark plug... you need to start testing somewhere... 👍👍👍

Where do you get the electrical schematics?

@LMAutoRepairs

Жыл бұрын

In this case was HGS... 👍👍👍

@hamzahajjaj4106

Жыл бұрын

@@LMAutoRepairs thank you. If I want the Renault one, where I can get them. Thank you 🙏

@LMAutoRepairs

Жыл бұрын

Google will help you... There is some PDFs about with diagrams... Otherwise access to systems like HGS might help... 👍👍👍

@hamzahajjaj4106

Жыл бұрын

@@LMAutoRepairs thank you

Hello. I have a BMW 318I and the problem is that when cold it runs smooth but when warm it starts shaking. The error gave me a miss wire 3 and 1. Can you tell me what it is? Thank you.

@LMAutoRepairs

Жыл бұрын

🤷‍♂️ You need investigate what is happening on those 2 cylinders... it is impossible to guess what is wrong without proper testing... 👍👍👍

@claudiupopescu5560

Жыл бұрын

@@LMAutoRepairs ok...i understand...could the engine be broken? Thank u!

@LMAutoRepairs

Жыл бұрын

@@claudiupopescu5560 Again... impossible to say... You really need to check and test thoroughly... Any suggestion I would give, would be me guessing... and guess is no good...🤪 👍👍👍

@claudiupopescu5560

Жыл бұрын

@@LMAutoRepairs Ok Thank you very much

@heshamismail427

Жыл бұрын

Hi guys I have just bough a used 318i automatic 2010 and it had a yellow engine light. Diagnosed with misfiring in 2 cylinders, needs spark plugs and coils. Also needs water pump change. Exhaust manifold needs refitting as has been worked on before and it is leaking smoke so causes noise. The engine light is not always there, but I could smell petrol from the exhaust. It also sounds like this car. How bad are these faults? if the car company will fix them should I keep the car or try to return it?

👍🏻👍🏻👍🏻👍🏻

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Made in Slovenia coils😃

@LMAutoRepairs

Жыл бұрын

😅 👍👍👍

You must know, much duel destroy sparkplug, and overheating katalitic konv. Or give vode po420, insuficijent cat.

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Another prime example of something new doesn't mean it's good

@LMAutoRepairs

Жыл бұрын

☺️ 👍👍👍

Hi guys i have same problem with my 318i cylinder 1 any one have proper Solution?

@LMAutoRepairs

6 ай бұрын

Have you watched the video? 👍👍👍

@uktravelvlog123

6 ай бұрын

Yes

@uktravelvlog123

6 ай бұрын

What i do next

This car will be back for a cylinder 4 misfire soon if he won’t replace the injector as it will foul the plug

@LMAutoRepairs

Жыл бұрын

Agree... the owner was advised of all the issues... ball on his side...🤪 👍👍👍

@autoSRI

Жыл бұрын

@@LMAutoRepairs that wasn’t meant as a dig at you, you can only do what the customer wants to pay for

@LMAutoRepairs

Жыл бұрын

@@autoSRI I know... I was just pointing it out as well... 👍👍👍

Do they drop them off to you Luis and run off because they can't fix them😄

@LMAutoRepairs

Жыл бұрын

Pretty much...😅 👍👍👍👍