Replace Spark Plugs of Mercedes M278 W221 S550 奔驰更换火花塞 

What a beautiful DIY video without a single word being spoken and no annoying music. Thank you good sir.

For a DIY buff who enjoys working on cars/engines, I’ll first thank for this video which was my best reference to replace the plugs on my 2016 E550 with its twin turbo V8. For anyone else thinking of doing it: it’s a ++ challenge w/o the proper tools. You have to have the correct size magnetic spark plug pivoting socket plus the long handled coil pliers. Even then there’s very little room to access the coils/plugs closest to the engine firewall, making those 2 on either side the most difficult to work on. I used “clunky thick round head” ratchets (alternating between 1/4 and 3/8 drives) and would have done better with the thinner ratchet heads shown in the video. But using the recommended pliers, I still tore apart the tubing on both ignition coils located closest to the firewall, since it was so awkward to leverage the pliers to pull the ignition coils out, with so little room. I’ll see if I can replace only that tubing but if not, I’ll buy 2 new ignition coils. So definitely not an easy DIY job and something to keep in mind, especially if you’ll suffer w/o a workable vehicle while waiting to get (for example) replacement ignition coils.

Truly exceptional, and honestly - The best DIY I have ever seen.

I just kept waiting to see you get another tool from the tool drawer. Now that’s impressive.

Great DIY! Just did the spark plugs on my 2012 E550 and used this as a reference. I pulled the ignition coils while the motor was hot/warm, then waited for the motor to cool to torque the new plugs. I didn't break any coils and they came off with ease. On my tuned car with 60k miles it definetely needed a change. Thank you for the detailed video!

Mr Lee did very good & precise videos, I m a MB tech, I have to say your job details like professional mechanic very impressive silicone grease back all plugs/connectors very important

Thanks for the video. I used it for my GLS 550. I will say the GLS 550 was more difficult, but the concepts were the same. Getting in the very back is a challenge but doable.

What a great video! For once, no obnoxious music, just slow and methodical.

Fantastic video. I have a tendency to pull apart the ignition coil so I let the spark plugs go 70-80K instead of 50K and then replace the ignition coils at the same time.

Great video. I was nervous about attempting this maintenance, but it doesn't look too bad.

You have the coolest tool! You have to be a Mercedes Benz mechanic for sure. Love your videos

This Channel is underrated! Love your S class stuff!

And that is how you save $600 dollars compared to the dealership doing it. This is also the time to replace the coil packs as it's good preventative maintenance on these engines to prevent misfires.

Senior Leigh, Thank you for such good and relaxing videos. I enjoy them and take time to relax and learn! Please keep up the great videos!

相當細心的做工，給個小建議，火星塞及螺桿轉至接觸面時再使用磅錶上磅，磅錶延壽

Thank you so much for the video. I'm about to start on my "new to me" e550. This answered a lot if questions.

Excellent video, many thanks. Question - does the WIS instruct regarding spark plug indexing, the final orientation of the plug electrode in the head? I'm puzzled in that the threads start where the threads start, and the torque spec finishes the job. Any comments? Many thanks once again!

老李师傅，活干得真心漂亮，工具也亮，视频拍得也到位，相当棒的示范教程。如果在一些节点上加上相关文字就更完美了。哈哈

Great tutorial!! What size torx socket for the bolts securing the coils?

Nice, very detailed, but I have to ask. What information would we get from scoping the spark plug sockets? I'm sure there is some solid information there, but I wouldn't know it if I saw it.

great video thank you, what grease did you use for the plug to the coil and why?, also no antieezed grease for the plug?

Fantastic video, thanks Mr. Leigh for the very clear assistance here. My wife has a 2015 GL550 and this video enabled me to address an ignition coil failure. Have you thought about putting a video on changing the engine coolant? It's not clear to me how to change the coolant in the small tank below the engine cover, which I believe is connected to the turbos. Is this coolant separate from the radiator's coolant?

Amazing video! Thank you

Awesome video, I just ordered everything I need for this. I have question, I see grime build up on my front timing chain covers (left and right) I was told I just need to reseal them soon before they start to leak. Have you done this procedure?

Those plugs r good for 100k. That time put new plugs and new coils. Good for another 100k.

This is an excellent video.

Great video quality 💯☕️

Hi Sir, Do you have any video for throttle body cleaning for that S550? thank you in advance

Wish I found this video before I did mine. Now the stupid, I managed to break the tab on all the coil connectors. Instead of tapping the tap all way out, we forced its way out after loosening it. Do you know if those taps/clips are replaceable by any chance? Where can get them if there is such miracle.

Senior Leigh, thanks for a great video. Always enjoy your videos. At what mileage do you change the ignition coils? or do you just change the coils every time you change the spark plugs? Thank you

Great video many thanks 👍👍👍

Are you indexing the plugs? And making sure they are indeed indexed?

先感谢做视频的老李之后在认真慢慢看

thanks

What socket was used to unscrew the bolts holding in the Coils?

👍，这是教科书级别的

Are you sure about the cylinder numbers? I thought number four was in the back on the passenger side on the M278.

Great video from main land 👍🏻

I miss your excellent videos. I hope all is well.

I replaced all 6 coil packs and all 6 spark plugs now im getting code p0351 primary/secondary circuit i am getting a fault on all 6 cylinders? Any ideas im gonna try new sparkplugs as i watched a few videos and some guys say it could be the sparkplugs itself, nd the gap, im gonna get oem plugs

Whats the torque value for the coil pack screws?

Beautifully done?

Very informative videos have a question about the ignition coil connector plug that has the gray clip is there a place to get them I broke one on my car and would like to replace it thank you!

The spark plugs are supposed to go in with no anti-seize?

又一部好video.李師傅～影片17:43用的是什麼類似保護膏？amzn能買到嗎？謝謝您

恭喜您呀， 李叔叔您好 我是Vic，很喜欢您的视频，有些关于车子的事情想请教。我是cls63 amg 2013的车主，我们的车使用非常接近的发动机，m157是您s class的m278的amg版本。最近我的车子起步，刹车快停住，reverse倒档的时候都会很Jerky，感觉动力一下一下的，抖个两三下，一耸一耸的，像是missfire一样，转速表和排气声浪也会随之波动，有时候上坡高档位也会连续非常轻微的抖动，电脑没有codes，no engine light。目前我已经换了spark plugs, oxygen sensor, 清洗了MAP sensors，reset了TCM，在换oxygen sensor前有Missfire和sensor的codes，换plugs后这种抖动减轻但依然存在，现今不知道怎么办，想问问李叔叔有没有什么头绪。另外我们m157 or m278 在2013或更早的批次有timing系统的设计缺陷，我也检查了我的timing chain，幸好是换了新的版本，建议叔叔也去看一下，机油倒入口就能看到。网上有部分m157 m278车主都有我这个抖动问，下面贴上别人拍下来的问题表现视频。望回复

👍

is that the cylinder order you posted on the video? i need to know where cylinder #2 is and i cant fing anything online. can you please help me. Thank you

what the torque for the spark plugs? whats the torque for the coil connector screws?

Prof guy !

👍👍👍👍👍

Thank you for the good work. my ignition coils on my m278 engine are so tight i can't get them off is there another trick?

cylinder order is wrong

你好，你视频超赞，我买二手08年s550跑8万公里，现在有问题就是跑高速80公里以上方向盘抖坐椅抖，是什么原因

love your channel. I have been trying to remove the electric connectors and have been unable to do so. been trying for 2 days now. ANY suggestions or help would be much appreciated.

👍🏻

Could you pls by any chance reply with the torque specs ?? Other then that very detailed video love it! My gl450 is about to get my hands on it!

What’s that tool called you use to remove coil pack safely

Hi where can I get this workshop manual? Thanks

I could do without all the cinematography and ASMR crap and just get the job done. I’m so glad I don’t have time for this crap….I just fix cars.