2009 W212 E250 CDI OM651 engine misfire
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2009 E250 CDI
2009 W212 E250 CDI OM651 engine misfire
Hi,
I'm having trouble with a misfire on my 2009 W212 E250 CDI sedan. It consistently happens in 1st gear when the engine is cold at ~1700rpm.
I have run 2 tanks of injector cleaner and nothing has changed.
Does anyone have any advice on this issue? Is it a common issue with this engine?
Thanks
I'm having trouble with a misfire on my 2009 W212 E250 CDI sedan. It consistently happens in 1st gear when the engine is cold at ~1700rpm.
I have run 2 tanks of injector cleaner and nothing has changed.
Does anyone have any advice on this issue? Is it a common issue with this engine?
Thanks
MBWorld Fanatic!
Joined: Jan 2009
Posts: 9,224
Likes: 1,798
From: V E G A S
1922 Ford Model T / no OBD
Fill up your profile, so we know what model you drive.
You have OM651 engine, but in version that was never sold in USA, where most of the members are from.
Than get a scanner, who can read MB.
Lastly we do have designated diesel section, where owners of the same engine in different models can add their comments.
You have OM651 engine, but in version that was never sold in USA, where most of the members are from.
Than get a scanner, who can read MB.
Lastly we do have designated diesel section, where owners of the same engine in different models can add their comments.
Super Member
Joined: Jun 2022
Posts: 739
Likes: 328
From: WA State, USA
2014 Cummins, 2014 E250 Bluetec
Codes, mileage on car. Have you noticed decreased fuel mileage on your commute. Happens only when cold correct, when you leave the car warm say at grocery store when restart does it do it as well or just first thing in morning?
Can you describe the misfire. Unfortunately if its got a DPF and possible SCR system you cant get a feel for injector issues by sight. If it was a straight pipe ya could get some good indications of unburnt fuel, over fueilng, oil and or coolant leaking into cylinder.
For instance my truck (different diesel) has a slight oring leak at one of the valves, it will drain a small amount of oil into a cylinder if it sits more than a few hours. On startup it isnt as smooth as it should be until it burns off the oil which shows up as bluish white smoke on startup. One of these days Ill fix that probably.
Can you describe the misfire. Unfortunately if its got a DPF and possible SCR system you cant get a feel for injector issues by sight. If it was a straight pipe ya could get some good indications of unburnt fuel, over fueilng, oil and or coolant leaking into cylinder.
For instance my truck (different diesel) has a slight oring leak at one of the valves, it will drain a small amount of oil into a cylinder if it sits more than a few hours. On startup it isnt as smooth as it should be until it burns off the oil which shows up as bluish white smoke on startup. One of these days Ill fix that probably.
