Leaking Injector: How to Replace to Avoid BLACK DEATH 

Are you going to try to replace your injectors? We would love to hear any tips and tricks that you have in the comments below! Thanks for watching 😆

Hello from Germany! Everything has been done correctly so far, including the approach. I think the idea with the aluminum foil is great, but why not use it to close the opening of the injector until the high-pressure line is connected again? Also from the return line. I also took out the injectors on my W204 and was probably a bit too careless because dirt particles had probably gotten into the system somewhere. The engine initially had too little pressure in the fuel system and would not start at all. With the help of Starterpilot, the engine ran, but very rough and smoked a lot. It is really important to pay attention to cleanliness, a single particle can be enough to deactivate an injector. My Benz ran without any problems before and I had harmed myself in this way. Now I need a new fuel filter and will change all the injectors and the rail pipe needs to be checked for cleanliness. Maybe the injectors would have had to be replaced soon anyway, but I could have saved myself these costs and work for now ;-(( What I wanted to say to all amateurs. This work is basically simple, but do this work very carefully, you can save yourself a lot of trouble.

THIS IS BY FAR THE MOST ACCURATE - AND EASY TO UNDERSTAND - TUTORIAL ON BENZ DIESEL FUEL INJECTOR "BLACK DEATH"!😄

Thank you so much. We are looking to buy a 2006 today and have been studying all of your videos! Hopefully see you down the road. Cheers from California

A really clear explanation of the whole process, will be doing my C270 soon. I also bought a cheap reaming kit to clean the washer/injector seats. I already have a small ultrasonic cleaner im going to use.👍😀

why not losen off the retaining clamps a little then start the engine to pop the injectors out a couple of mm. that makes it far easier to lift out the injectlors.

excellent video. Thank you

Very informative video…I may be doing one on my GL 320 👍

great video well explained i (THOUGHT) have all the parts now i will go and get new stretch bolts thanks

Was watching another video (Florida van man) he made a tool from wooden dowel to clean the deep hole for the injectors. I’m impressed. Thanks for posting.

thanks for teaching us I learned a lot about your video I have a 6cta8.3 cumming diesel engine with the same problem we cleaned injectors and calibrated we put new washers and it is leaking here I found the solution with your video I have to clean the injector hole where the copper washer sits THANK YOU SO MUCH PARTNER

The reason this job is vital to do is because in a lot of engines the bore for the injector is open and exhaust gases escape (blow-by) into the crankcase and mess up the engine oil. All engines have some blow-by by design and this is vented via the breather pipe, but excessive blow-by is not good and can seriously impact an engine. Also oil can be forced into the breather pipe and into the turbo . The breather pipe vents to the air intake just before the turbo.

Very helpful video ❤

Absolutely brilliant video, learnt so much in just a few minutes. One concern I'd have is about 'that compact' material falling off the injector as you remove it. Do you bring the piston to TDC first??

Good stuff!

Well done, it's the one job on my T1N I don't want to tackle myself

Great!

I have designed a puller that doesn't require a slide hammer, or unscrewing the top of the injector. it sits on and pushes down on the 4mm wide strips of the valve cover that run front to back, to the left and to the right of the injectors. The thing I am not sure of is if the valve cover can take the stress. The parts of the puller saddle that sit on the strips of the cover are 5-6" long. My number 1 injector was very stuck, even without visible black death particles, driving it up hills with the bolt loose wouldn't do the trick, slide hammer did after many minutes...Yours is the best over all video I have seen for this job, clear video, no wasted words, but you covered all the bases! Only critique is that you should mention about cleaning out the where the hold down bolt threads in.

How do you remove the electrical thing on the injector? I cant get it out

if you have a lot of carbon build up or stubborn to get out, soak the area around injectors overnight with acetone then warm up the engine as you have described, then also you can use acetone to clean off carbon from tips

Amazing

Dang there were some solid tips there. One issue missed. Be extra careful to clean threads on the bolt and hole. But not to leave residue or oil on the threads. Oiled bolts will impose more tension on the bolt when torqued and can risk breaking the bolt when following the manual torque specs.

I’d recommend carb cleaner for the “black death” and cellulose thinners for inside of the injector bore. Oven cleaner is nasty stuff and reacts badly with aluminium. Another thing to be aware of is the seat of the bore may need re-reaming and / or polishing. There are cheap tools that can be bought for this. Gently does it though. That injector you inserted looked like it had a slot for an o-ring? Did I miss something?

USE PENETRATING OIL, SLOWLY MOVING BACK N FORTH WITH REG FLAT HEAD SCREWDRIVER , ENGINE WARMED UP OF COURSE. GREAT VIDEO. THE MORE I LEARN TO DIY , THE MORE I WANT A MERCEDES SPRINTER. NEW SUB. FROM THE 641... PS. SOME VIDEOS SAY THE AMAZON TOOL DOES NOT FIT?

when you say bolts I'm assuming injector hold down bolts....but what O rings ? or did you mean washers. Please clarify.

Once the stuff cools it is very easy to scrape off of the injector. Also, rather than using oven cleaner which can probably do some nasty things to other stuff in the area brake cleaner works very well and is safe for most of the components nearby. Also it is bad for your torque wrench to continue to yank on it after it clicks over. You should switch to a different wrench or at a minimum set the torque higher.

You think putting an ring in the groove will help? The new seals kit came with orings

Have been soaking my bolts in pb blaster before drives in anticipation of doing this job. I should be cleaning black death as much as possible before injector removal just in case I get a little death In the injectors ?

Holly snap those freaking bolts and copper washers are expensive...I don't need them but that would be a good thing to have on hand.

Did you have any copper washers get stuck? We have one that won't come out and are trying to figure out any tips or tricks to remove it. Of course it's the very last one and the most difficult to get to.

I'm very surprised that you didn't clean the injector nozzles while they were out. I would have overhauled them and made sure they produced a nice mist.

Why can injectors become covered in oil?

How did you clean bolt threads?

How many ppund you put in bolt

My #2 is leaking. How do i know if I need a new injector or not?

How does she run now ?

I let it do. injectors can get so stuck. Sometimes more than 15 tons of force is needed to get them out. here in the Netherlands there are companies that have special tools for this. Pull them out like a no time.I recently had to replace my glow plugs, one of them also had to be drilled out. And the rear is hard to reach. I have no experience with that. If it goes wrong then. it's just going to be an expensive joke

oven cleaner and aluminum foil = exothermic reaction creating hydrogen gas..... FYI

O torke

calling it black death isnt helping the fact mine is really bad but drives fine..... I'm researching how to to do the job now but man. that title description doesn't help the over all confidence lol. can you explain the DEATH part? Like making it sound unfixable if its in fact very black like mine is.

Showed us nowt . For three quarters of the video

No need for coding ? Curious

every time you stuck that blue paper towel in the hole and twisted it i had to cringe at the thought of leaving behind any shreds

Pfffffffff, black death. This is tame compared to the ones I've had recently.

Dont use oven cleaner it pits the aluminium.

🤦Really buying from a dealership? Maybe the bolts, but genuine bosch washers are available in packs of 20 for pennies! That injector isn't clean. It needs to be spotless. The copper washer has grooves that grip the tip if you bought genuine bosch injector parts.

Ugh. Mechanics are terrible video editors. If the content of your video is a van, its like an unwritten rule that the duration has to be over 15 minutes. Like this video could easily be 1:05 tops. I cant watch it.