OM654 Diesel Engine: Early Life Failing Injector Seals - is anyone else having similar problems?

Page may contain affiliate links. Please see terms for details.

dsharples

New Member
Joined
Jan 15, 2021
Messages
6
Location
Woodbridge
Car
2019 E300de AMG-Line Estate
MB Club Friends,

I purchased a 23k mile Used E300de in August last year from an MB Dealer, to replace my excellent, but aging, E300 Blutec Hybrid.
As I put some miles on my new purchase, I began to occasionally notice a burnt oil/diesel smell in the cabin.
This got progressively worse, and at 28k miles, I resolved to investigate, and noticed wisps of smoke visibly seeping out from under the plastic top engine shield.
My car was booked-in with my local MB Dealer in December, and a failed No.1. Injector Seal was diagnosed. There was significant carbon build-up - so the repair came to over £600.
My MB Used Car Warranty, and MB UK, refused to cover any "contribution" or "goodwill" as "seals" are not covered, and as the car passed all Approved-Used Inspections by the supplying dealer (not my local dealer).
So I was left with an unexpected bill for a vehicle I had owned for 5ish months and covered just less than 5000 miles in!
Subsequently to the repair, the smelly engine issues returned - so I booked my car into my local dealer again.
This week, they diagnosed leaking No. 2 & 3 Injector Seals, and have replaced them, plus No. 4, which whilst showing no issues, they replaced proactively to avoid another visit!
A further bill £300+ has unexpectedly landed with me (which I understand did include some goodwill from my local dealer).

And because I do a lot, if not all of my local miles in Electric-Only Mode, the Diesel Engine has only (according to the car) covered about 6000 mostly long-distance cross-country miles since I've owned the car.
These should be the ideal operating conditions for such an engine. I also generally use Premium Diesel (Shell VPower).

I'm not here to whine about being left with the bills. Whilst very disappointed, I'm taking these matters up elsewhere.

What I would like to understand is whether this issue is more common than I'm being told?
It's generally claimed that this is very unusual on an OM654-engined-car with <80-100k miles.

But... I find it really hard to believe that my car is a "one off" and I've simply been very unlucky - which is how my local dealer are positioning it...

I am therefore concerned that there could be something about my car, either in how it was manufactured, or its history, its previous usage, or even its current usage which has caused this premature failure.

Over to you?
 
I can't say I have seen a large number of these types of failure, and we look after a few low and high mileage om654s, some for cab companies etc.

I would hazard a guess, it may have had a set of injectors very early in its life, and a mistake was made when fitting
 
I can't say I have seen a large number of these types of failure, and we look after a few low and high mileage om654s, some for cab companies etc.

I would hazard a guess, it may have had a set of injectors very early in its life, and a mistake was made when fitting
Nothing in its MB Service History / Record / Warranty Record to suggest this.
Only one service registered by MB prior to my ownership due to Covid-19.
Car was under MB Factory Warranty until just before I purchased it.
There would be no reason to go "outside the network"?
Everyone seems to think its "very odd"... but I suppose you never know.
 
Then, a bad day at the factory, and it now falls into the % of engines that have early failures of one type or another.
 

Users who are viewing this thread

Back
Top Bottom