How to TEST your N54 Injectors AT HOME (Leaking Injector Symptoms!)

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Today, we're looking at my friend's 335i and testing the old injectors to see which ones have failed. Since I bought this car (and then sold it to my buddy) it has had the following symptoms:
- poor mpg
- long crank before starting
- misfire on cold or warm start
- slight misfire at redlights
- black smoke under acceleration (rich condition)
The theory was that the injectors were stuck partially open at all times, so when he turned off the engine, the leftover fuel in the high pressure rail would leak into the cylinder and thus deplete the pressure for the next engine start. It would also mean that the injectors leaking fuel would be running richer than the others. So to test the injectors, we hooked them up to the rail, forced them to stay closed, but then pressurized the rail by cranking the motor. You'll see how easy it is to spot the bad injectors...
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Опубликовано:

1 июн 2022

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Комментарии : 86

@bosanovaboy 10 месяцев назад

Thank you thank you thank you! For months I've been trying to figure out why I have a difficult time starting my Hyundai Tiburon after I have driven it and it's been off for over an hour. I saw your video last night and did the same test this morning. I found out my injector #4 was dripping gas. Thank you very much

@fastboatster 2 года назад

This is brilliant, way better than some cleaning services which test the injectors at low pressures.

@michealrucker2959 10 месяцев назад

Great video. I'm having a misfire on Injector 6 and suspect it is leaking. This video is good info. I never thought to check mine like this. Thanks!!

@LadislavSipos-xk4cs Год назад

good day, this is enough to test the sprayer, thanks for the answer

@dokterkarel Год назад

very good test!

@jcdragon77 Год назад

Great Work mate. Ultrasonic cleaning might help extend the life of your old injectors and new o rings + filters if they have them.

@N54BrelatoMidwest 8 месяцев назад

I've watched this like 7 times this past week prepping for me to to it today 😂 only thing is I'm testing my newly used injectors with bank 2 hard lines so I don't have to pull my 3 injectors that never misfire out of the car, only because I only ordered 3 decoupler and Teflon seals

@konchittavong697 Год назад

Very helpful! 👍🏼👍🏼👍🏼

@mdushaka6403 10 месяцев назад

You a professional brother, l give you double thumbs-up

@TheBimmerBarn 10 месяцев назад

Thank you, much love!

@pugs1377 2 года назад

That's the only way to test em and be sure. When I first got my 335 I checked the injectors. 4 wer spraying and 2 dripped. Cold start was fine but a hot start took a while and was a bit rough. $1400 later and the new injectors were in and she was running great. I hope the injectors on my n63tu last more than 100k

@amaralkhalidy2553 8 месяцев назад

Great video solved my problem with mixture/lean codes. All 6 injectors were leaking for my case giving code 0029e0. Thank you!

@pdef1949 8 месяцев назад

It would be nice to see how you coded the new injectors

@alpanosap Год назад

Thank you guys, it's very helpful video and it just gave me an idea how to test my car injectors.

@TheBimmerBarn Год назад

Glad it helped!

@alquehenwebb7349 9 месяцев назад

Thanks for your video

@TheBimmerBarn 9 месяцев назад

Hope it helped! Thanks for the nice comment :)

@Nico_335i_DCT 2 года назад

Well Chris. 6 months ago I purchased 6 index 9 remanufactured injectors. I got a 60k km warranty. Everything was okay. But a few weeks ago the car had a rough colt start again. I checked the injectors and nr3,4 and 5 are leaking. I was warned not to buy remanufactured injectors but I didn't have the money for index 12 ones, back then. The remanufactured injectors were €700. Now I'm saving money again for 6 index 12 new BMW injectors. But the prices went sky high lately. They're now € 2450,- ( $2620) at the dealership. Absolutely insane! Dutch regards, Nico.

@seppmeier9961 2 года назад

if even available. The usual German bmw webshops dont have them (baum & leebmann bmw)

@Nico_335i_DCT 2 года назад

@@seppmeier9961 I know. I can buy only 1 at the dealership, at the moment🤯.

@TheBimmerBarn 2 года назад

Yeah my friend almost bought a set of those "remanufactured" ones as well, not sure what the results would have been. Once they get stuck open and start leaking, there's no way of refurbishing them.

@manifesto7877 Год назад

It's completely outrageous how much the injectors cost now. Im hoping fixing supply chain issues will alleviate the issue!

@jlindborg1105 Год назад

Good testing method. You should though have tested the “new” ones the same way to actually KNOW if they had the same problem or not.

@derekkchung Год назад

I would test the index 12s too. I would also extend one injector wiring to reach each "new" index 12 injector to see if they are open and their injection patterns. Never trust ebay and there are FAKE index 12 out there and when I did what u did last year, I could not even program the compensation number into DME and 3 out of 6 index 12 I bought have the same compensation number.

@andrewberner3738 Год назад

@thebimmerbarn Hey man, what adaptations did you reset after installing the Index 12s? I've only been directed to, and subsequently did, reset both lamda ones. Should I have done more?

@tashinorbu9262 Год назад

Hey guys I need help with inpa. I have replaced my msd80 dme with msd81 and was wondering if I should be ok to choose n54 msd80 option on inpa to calibrate my injectors.

@246alfa 10 месяцев назад

On the bench to check under different modes. sometimes the injector starts to drip after the tests.

@AbdulHaq11901 7 месяцев назад

So only need to remove electrical connector to injectors and disconnect coil pack connectors? Thanks.

@MegaMaximusthegreat 2 года назад

Cool video! Where can I get a car like this?

@Cdswjp 2 года назад

nice

@gavinchen7884 Год назад

Hello sir, I also encountered the same situation, is there any fault code? Does the tachometer pointer drop first and then rise after the engine is cold started? car shaking

@n54enthuziast66 8 месяцев назад

Should I disconect EKP module and crank it to lose the rail pressure ? How long was it sitting before you disconected the rail lines from injectors? I want to avoid fuel all over the engine bay

@user-jm3gx8gr5n Год назад

e60 535i has no throttle and idels up and down..but mine was not the fuse like in one of your vids .. plz help. new gas peddle , new throttle body. no water in DME ever.

@JoseSandoval-ic5xe 2 месяца назад

Hi by any chance was his car running lean for ltft, misfires and surging when in park that would get better by stepping on the gas??

@go4ittt837 11 месяцев назад

I have N53 and done the test 4 injectors were leaking, I put new ones and it gets worse now ( 4 injectors was used but I tested them as you did) don't know what to do next:-)!

@coolwicia Год назад

I understand correctly, after such a connection, nothing can drip? even if i turn the engine

@TheZayGS 8 месяцев назад

Test the new index 12’s. I have a set with less than 10000km on them & they leaked enough to spin a bearing.

@1991june Год назад

Im having an issue when i start getting on accelerator at around 3 to 4 rpm the car feels like it jerks n looses power it only does it sometimes .

@AliAZEEMI-ey9ns 4 месяца назад

Help! So my car is completely fine on idle. Never skips a beat. But upon pushing the throttle a bit it will misfire. It’s fine on low rpms but high rpms. It will throw a cylinder 1 misfire and start to stumble. Would this be the injector?

@cristianfigueroa8828 Год назад

Where can I buy the bmw inpa program ?

@xEnciGamerxenci 10 месяцев назад

So when i change the injectors can what i do mext i dont understand the part with the laptop

@shoulda_beena_cowboy 2 месяца назад

Hey couldnt you just unplug injectors and coils and turn the engine over then pull plugs to see which is wet? That way you dont have to remove the injectors

@amirholmes-qi4fd Год назад

I did this but my motor never cranked and made an ugly sound. Did I miss somethingv

@luispina317 4 месяца назад

If one is leaking how do you fix it?

@cpttoxic2969 Месяц назад

Did you have to code the new injectors? I keep getting mixed responses

@NotMoby24 Месяц назад

What do you mean by "Adaptation reset" ?

@Zodiam. 2 месяца назад

Do the injectors generally fail in any other way then leaking? My cyl 6 injector is leaking for sure as the plug is soaked in fuel after just a couple hrs. As i want to go for DI delete when Nexsys works out the kinks i dont want to buy all 6 new Index 12s, so figured i would buy a couple used ones for spare, flip my existing ones and test them along with the "new" used ones, and just switch the ones that leak. Is there any point in bringing them somewhere to get them flow/spray pattern tested or is it just the leaking to be worried about?

@Zodiam. Месяц назад

Answering myself. They do Gail in other ways. I tried 2x used injectors and they didn't leak but caused heavy misfiring instead... I gave up and bought new instead.

@maciejlisowski3044 Год назад

Do you install new decouplers and teflon seals each time injector is taken out of the engine? :)

@TheBimmerBarn Год назад

👀 😅

@crosstalktv5780 8 месяцев назад

I just pulled out one injector just to look at it. I replaced my valve cover gasket a few months ago but when I took the injector out it was covered in oil. Does that mean it was just old oil?

@TheBimmerBarn 7 месяцев назад

Yeah old oil, there's no good way to clean up the valley down there where oil collects and takes forever to burn off.

@user-vi7qy2qp5y 5 месяцев назад

Do have to code them?

@AlexCapi 2 года назад

Do you know exactly which adaptations were reset? 6:15. Thanks.

@TheBimmerBarn 2 года назад

Used INPA and reset all adaptations on the second page, in the DME.

@aarzy888 2 года назад

Low pressure fuel sencer.

@wyattturner9976 Год назад

does it require a new battery program or can you just reconnect and start up?

@TheBimmerBarn Год назад

No battery reprogram needed, unless you replaced it!

@boyb72 Год назад

Will the injector get damaged if i clean it with a scuff pad with brake cleaner on the tip?

@johnjones607 Год назад

yup

@fano4044 Год назад

I did same test as you.. but i have N53 engine.. none of the injector made a single leak, i changed all plugs and coils.. but there are still symptoms like rough idle, shaking, vibrating on cold start, check engine.. i dont know what to do

@TheBimmerBarn Год назад

Read the fault codes, and that should help you pinpoint the problem. Sounds like it could be fuel related! Good luck

@N54BrelatoMidwest 8 месяцев назад

Check if the injector is loose if so add a new decoupler and o ring compressed

@starcraft321able 11 месяцев назад

can you do this for non coded injectors? just to test if theyre leaking.

@TheBimmerBarn 11 месяцев назад

Yeah! It'll work just the same.

@starcraft321able 11 месяцев назад

@@TheBimmerBarn sweet thanks for the video! Finally getting around to replacing my injectors with used index 8’s after finding out 4 of them are leaking. Fingers crossed at least 4 of the used ones I bought are good 👍

@javiermontes2790 Год назад

Did you takeout spark plugs?

@TheBimmerBarn Год назад

No reason to, just unplug the ignition coils!

@uschifickstuck3418 11 месяцев назад

What Adaption have you reset ? (Name the Adaption?) THX

@TheBimmerBarn 11 месяцев назад

All of the DME adaptations

@nooraneemahamoodally6382 Год назад

What happens if you don't code those?

@akdsjgalksdfjg 6 месяцев назад

wont run right

@samah713 Год назад

Would this cause oil to smell like fuel?

@TheBimmerBarn Год назад

Yeah, could be causing the car to run rich.

@samah713 Год назад

@@TheBimmerBarn i just did the test and none of my injectors leaked at all....im still getting gas in the oil though. Could this be a bad seal on the hpfp? Also did a compression test on the engine and it checks out fine.

@TheBimmerBarn Год назад

@@samah713 that's the only other place I can think off, or the car could be running too rich, which could be caused by bad oxygen sensors. Good luck!

@Garik.e60 10 месяцев назад

Your HPFP could be going bad too. There's a seal that when failed causes fuel to get in the oil.

@ChadFreeman757 10 месяцев назад

I got 30BB I wish RU-vid didn’t get rid of messages 😢

@CarlosHernandez-py8ds 9 месяцев назад

What u should of done is showed the new injectors see if any of them leaked BS

@zafar78600 6 месяцев назад

so the spark plug replacement etc; were unnecessary repairs.

@akdsjgalksdfjg 6 месяцев назад

never a bad idea to replace sparkplugs, they are wear parts after all

@markd2768 Год назад

You didn’t bleed the lines after you removed the hard lines. How do you know there was pressurized fuel to the car injector. You don’t there full of air.

@Thomas998822 Год назад

If there leaking, the air will be pushed out first, followed by the gas. Common sense

@chrisr4815 10 месяцев назад

*They're

@summerli2700 2 года назад

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