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W213 E200 M274 - Combustion misfiring of cylinder 4

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Old Oct 10, 2024 | 06:44 AM
  #1  
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W213 E200 M274 - Combustion misfiring of cylinder 4

Hi everyone,

I’m having an issue with my car related to error codes P030085 and P030485. Here’s what I’ve done so far:
  1. Changed the spark plugs – didn’t resolve the issue, the error persists.
  2. Swapped the ignition coils – the same result, error still present.
  3. Replaced the injector – worked fine for about 10 days, but now the check engine light is back.
The problem only appears during a cold start, usually the first start of the day. The engine sounds a bit off for the first 10 seconds, but after that, it returns to its normal sound. The car drives perfectly fine otherwise – no performance issues at all.
However, when starting cold, the check engine light starts blinking (VIDEO), and sometimes it just blinks without staying on the dashboard, but reappears the next day and stays on dashboard.

Has anyone experienced something similar or have suggestions on what might be causing this? Any help would be greatly appreciated!
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Old Oct 10, 2024 | 07:01 AM
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Originally Posted by dmoro
Hi everyone,

I’m having an issue with my car related to error codes P030085 and P030485. Here’s what I’ve done so far:
  1. Changed the spark plugs – didn’t resolve the issue, the error persists.
  2. Swapped the ignition coils – the same result, error still present.
  3. Replaced the injector – worked fine for about 10 days, but now the check engine light is back.
The problem only appears during a cold start, usually the first start of the day. The engine sounds a bit off for the first 10 seconds, but after that, it returns to its normal sound. The car drives perfectly fine otherwise – no performance issues at all.
However, when starting cold, the check engine light starts blinking (VIDEO), and sometimes it just blinks without staying on the dashboard, but reappears the next day and stays on dashboard.

Has anyone experienced something similar or have suggestions on what might be causing this? Any help would be greatly appreciated!
Have you read this site about piston cracking on the M274? The search feature can help you.
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Old Oct 11, 2024 | 04:37 AM
  #3  
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What year?
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Old Oct 11, 2024 | 05:40 AM
  #4  
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2018 E 200 4matic 2.0 135kW(181HP)

It's driving correctly but there is the light
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Old Oct 11, 2024 | 06:20 AM
  #5  
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Originally Posted by dmoro
Hi everyone,

I’m having an issue with my car related to error codes P030085 and P030485. Here’s what I’ve done so far:
  1. Changed the spark plugs – didn’t resolve the issue, the error persists.
  2. Swapped the ignition coils – the same result, error still present.
  3. Replaced the injector – worked fine for about 10 days, but now the check engine light is back.
The problem only appears during a cold start, usually the first start of the day. The engine sounds a bit off for the first 10 seconds, but after that, it returns to its normal sound. The car drives perfectly fine otherwise – no performance issues at all.
However, when starting cold, the check engine light starts blinking (VIDEO), and sometimes it just blinks without staying on the dashboard, but reappears the next day and stays on dashboard.

Has anyone experienced something similar or have suggestions on what might be causing this? Any help would be greatly appreciated!
is your car a direct injection engine? You might want to look for carbon build up in the intake valves.
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Old Oct 11, 2024 | 09:20 AM
  #6  
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How are you scanning for codes? What scanner are you using?

A blinking CEL means that there is an immediate, severe misfire occurring and continued driving can lead to engine damage. Steady means there is a condition that needs to be addressed directly, but not damaging. All CELs are emissions related.
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Old Oct 11, 2024 | 10:11 AM
  #7  
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Xentry diagnosis, short test
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Old Oct 11, 2024 | 01:15 PM
  #8  
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Funny INFO: I went for food and the CEL just cleared from the dashboard by itself
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Old Oct 11, 2024 | 01:23 PM
  #9  
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You are tiptoeing around this.

Do a real physical compression and leak down check.

Pull the coil and plug and use a borescope to inspect.

If inconclusive take it to someone who knows what he is doing.

Or sell the car. These M274 four bangers are junk. Use the search function on this site.
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Old Oct 12, 2024 | 02:17 AM
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Your engine is driving fine besides CEL.

What's the current mileage ?
There may be free options to turn that around...

Last edited by CaliBenzDriver; Oct 12, 2024 at 02:18 AM.
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Old Oct 12, 2024 | 01:23 PM
  #11  
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Originally Posted by chassis

Or sell the car. These M274 four bangers are junk. Use the search function on this site.
This so call piece of junk as you put it was one of Ward's 10 best engines, just because a few cylinders failed out of millions of M274 engine does not make it junk.
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Old Oct 12, 2024 | 05:11 PM
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Oh, no! Here we go again!
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Old Oct 12, 2024 | 06:35 PM
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Old Oct 12, 2024 | 09:39 PM
  #14  
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https://www.wardsauto.com/internal-c...verything-well
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Old Oct 13, 2024 | 09:19 AM
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Could we go a week or two without someone saying my car’s engine is junk? Please!
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Old Oct 16, 2024 | 02:11 AM
  #16  
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Originally Posted by dmoro
Hi everyone,

I’m having an issue with my car related to error codes P030085 and P030485. Here’s what I’ve done so far:
  1. Changed the spark plugs – didn’t resolve the issue, the error persists.
  2. Swapped the ignition coils – the same result, error still present.
  3. Replaced the injector – worked fine for about 10 days, but now the check engine light is back.
The problem only appears during a cold start, usually the first start of the day. The engine sounds a bit off for the first 10 seconds, but after that, it returns to its normal sound. The car drives perfectly fine otherwise – no performance issues at all.
However, when starting cold, the check engine light starts blinking (VIDEO), and sometimes it just blinks without staying on the dashboard, but reappears the next day and stays on dashboard.

Has anyone experienced something similar or have suggestions on what might be causing this? Any help would be greatly appreciated!
1. OP's location states that he's in Serbia. More than like it's a diesel and not the gasoline version.
2. Nesto mi je poznata ta pjesma na snimku xD (Zvuci mi kao Dzejla Ramovic - Ruine)
3. Mislim da ti je problem sa fuel Injectors. Imao sam isti problem sa svojim autom. Nazalost morat ces promjeniti sve cetiri, jer obicno kad ode jedan moze i drugi treci i tkd.... Samo fali da malo curi gorivo i upali se check engine. U mene je jedan crkao, zamjenio taj sto je curio i drugi mi tek poceo curiti nakon 1000 kilometara.

Opet bi otjerao auto kod mehanicara sto ima kompjuter od Mercedesa jer moze da vidi sve na njim. da se ne mucis dzaba oko motora. Zivio
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Old Oct 16, 2024 | 07:50 AM
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Originally Posted by Affalterback
OP's location states that he's in Serbia. More than like it's a diesel and not the gasoline version.
Diesel engines do not have spark plugs. It is a gasoline engine.
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Old Nov 5, 2024 | 09:05 PM
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https://mbworld.org/forums/e-class-w...ne-piston.html
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Old Nov 6, 2024 | 07:48 PM
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Originally Posted by The G Man
This so call piece of junk as you put it was one of Ward's 10 best engines, just because a few cylinders failed out of millions of M274 engine does not make it junk.

Right! Most of the M274 engine's that had the bad wrist pins where from 2015-2016- made by Nissan which was shut down a few years back!

A lot of reported bad wrist pins came out of California/West cost also. :-)

Last edited by Roman living; Nov 6, 2024 at 08:23 PM.
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Old Nov 7, 2024 | 08:22 AM
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Originally Posted by Massimo Here
Right! Most of the M274 engine's that had the bad wrist pins where from 2015-2016- made by Nissan which was shut down a few years back!

A lot of reported bad wrist pins came out of California/West cost also. :-)
Between the bad wrist pin and the cracked pistons, the M274 engine had some issues but the issues were mostly blown up online by old timers who do not like 4 cylinder engines, especially in their old beloved brand Mercedes. I remember the similar conversations online when the 6 cylinders replace the 8 in performance car, one would think that the end of the car enthusiast era. Now EV is getting into the performance car market, and these same people are turning their nose up on electric cars. Sometime, changes get harder and harder to adopt to as one older. Just give them back their naturally aspired, port injection, carburetor V8 engine and they will be happy.

Last edited by The G Man; Nov 7, 2024 at 08:24 AM.
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Old Nov 7, 2024 | 10:04 AM
  #21  
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Originally Posted by The G Man
Between the bad wrist pin and the cracked pistons, the M274 engine had some issues but the issues were mostly blown up online by old timers who do not like 4 cylinder engines, especially in their old beloved brand Mercedes. I remember the similar conversations online when the 6 cylinders replace the 8 in performance car, one would think that the end of the car enthusiast era. Now EV is getting into the performance car market, and these same people are turning their nose up on electric cars. Sometime, changes get harder and harder to adopt to as one older. Just give them back their naturally aspired, port injection, carburetor V8 engine and they will be happy.
lol right!

I know I was talking to this old timer here- a real shiza for brains that will probably chime-in, but anyhow he has or had a 2017 E300 that he (1) tracked, (2) put 89 octane gas in and (3) mention that he torn the engine down a few times!! Then wondered why he had piston problems LMAO!

Not to say there where not bad or over sized wrist pins that where made in the Nissan plant for MB M274 engines, but still! I would never add mods or track my 2017 E300, this is a 4 Cyl not a V8! If you want power buy the bigger engine how I see it.

Then he went on to say how every M274 engine was affected or most of them, which is absolutely incorrect! MB soon closed that Nissan plant down when finding out. It was a small percent compared to the millions of M274 engine sold.

Its a great engine that will last but you must take care of it. I personally know someone with a 2017 E300 2.0 gas engine- in Germany, has over 300k miles, not one major engine issue!

Last edited by Roman living; Nov 7, 2024 at 11:05 AM.
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Old Nov 9, 2024 | 07:42 PM
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Originally Posted by Massimo Here
lol right!

I know I was talking to this old timer here- a real shiza for brains that will probably chime-in, but anyhow he has or had a 2017 E300 that he (1) tracked, (2) put 89 octane gas in and (3) mention that he torn the engine down a few times!! Then wondered why he had piston problems LMAO!

Not to say there where not bad or over sized wrist pins that where made in the Nissan plant for MB M274 engines, but still! I would never add mods or track my 2017 E300, this is a 4 Cyl not a V8! If you want power buy the bigger engine how I see it.

Then he went on to say how every M274 engine was affected or most of them, which is absolutely incorrect! MB soon closed that Nissan plant down when finding out. It was a small percent compared to the millions of M274 engine sold.

It’s a great engine that will last but you must take care of it. I personally know someone with a 2017 E300 2.0 gas engine- in Germany, has over 300k miles, not one major engine issue!
Is it that the Engine manufacturing plant makes all the difference?

Here in Australia all E Classes are made in Sindelfingen, with engines likely coming from their Unterturkheim plant.

There are lots of 9year old C200, C250, C300, GLC250s and E200s on the roads here with M274 engines and engine wrist pin failures seem to be uncommon.

Mine has an M264 and so far, it’s running like the day I rolled it out of the dealership 4 years ago. Serviced every 6k miles (10k kms). Still smooth as butter on RON98 (US AKI 93 octane). But I’m apprehensive if their valve failures are universal or due to poor quality control at specific plants. The failure rate of M264s has probably not gone above 0.5% for them to report it.

Last edited by aks_19_ak; Nov 9, 2024 at 08:19 PM.
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Old Nov 9, 2024 | 07:59 PM
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Originally Posted by aks_19_ak
Is it that the Engine manufacturing plant makes all the difference?

Here in Australia all E Classes are made in Sindelfingen, with engines likely coming from their Unterturkheim plant.

There are lots of 9year old C200, C250, C300, GLC250s and E200s on the roads here with M274 engines and engine wrist pin failures seem to be uncommon.

Mine has an M264 and so far, it’s running like the day I rolled it out of the dealership 4 years ago. Serviced every 6k miles (10k kms). Still smooth as butter on RON98 (US AKI 93 octane). But I’m apprehensive if their valve failures are universal or due to poor quality control at specific plants. The failure rate of M264s has probably not gone above 0.5%
Yes you're probably safe, most of the bad wrist pins went to the USA lots of cases in California (West Coast) I guess that's just where the Nissan plant wanted to send those engine parts.

But remember even if your car was made in Germany it doesn't mean the engine parts came from there but luckily for instance I bought my car in Stuttgart Germany and had it shipped to the USA and later found out that my engine parts came from the Berlin plant-they also make engine parts!

My resources came from Mercedes USA, Mercedes of Stuttgart and my local dealership. You can always call Mercedes yourself, they have the affected engine numbers, mostly from 2015 to 2016, lots of C classes, Glc's.


Last edited by Roman living; Nov 9, 2024 at 08:04 PM.
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Old Nov 13, 2024 | 11:52 AM
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Originally Posted by dmoro
2018 E 200 4matic 2.0 135kW(181HP)

It's driving correctly but there is the light

Did you find out the problem the Piston Ring problem all the cases I've seen was piston number one. So I think you're okay it mostly affected 2015 to 2016 engine m274
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Old Nov 27, 2024 | 11:43 PM
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Originally Posted by Massimo Here
lol right!

I know I was talking to this old timer here- a real shiza for brains that will probably chime-in, but anyhow he has or had a 2017 E300 that he (1) tracked, (2) put 89 octane gas in and (3) mention that he torn the engine down a few times!! Then wondered why he had piston problems LMAO!

Not to say there where not bad or over sized wrist pins that where made in the Nissan plant for MB M274 engines, but still! I would never add mods or track my 2017 E300, this is a 4 Cyl not a V8! If you want power buy the bigger engine how I see it.

Then he went on to say how every M274 engine was affected or most of them, which is absolutely incorrect! MB soon closed that Nissan plant down when finding out. It was a small percent compared to the millions of M274 engine sold.

Its a great engine that will last but you must take care of it. I personally know someone with a 2017 E300 2.0 gas engine- in Germany, has over 300k miles, not one major engine issue!
Since you want to bring up useless **** again, i'll just post the thread for everyone to re-read where you were humiliated, caught lying, creating a fake MBWorld profile to try and make your self seem like others were agreeing with you (Here is the profile he made: https://mbworld.org/forums/members/5...edes-mech.html). Notice how the fake profile hasn't had any activity since the day Massimo here used it to comment on the linked below thread 😂😂😂😂
https://mbworld.org/forums/e-class-w...0-w213-10.html

I would've thought Massimo here would have learned his lesson after being humiliated last time on a public forum. I had 20 people DM me saying what a weirdo he is for making a fake profile and for lying constantly.

Anyways, OP, do you have any updates on your car? Have you done a leak down test and compression test on your M274? It could honestly be a leaking fuel injector that is causing your problems. I've had the same issue on my M274. The fuel injectors can get stuck open after 120 ish thousand miles and have to be swapped out. I also had one of my friends in Canada have to replace his M274 engine on his 2018 because his piston cracked and ended up blowing a hole through block.


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