Om654 very rough at low throttle input
I have a bit of a problem with a Mercedes e220d w213.
What I know about the problem:
Feels like a misfire (pretty much like the car is just running on 3 cylinders)
Only happens on low throttle, If I go full throttle there’s no problem at all. Let go of the throttle and there’s no problem.
Car usually runs great like 60-70% of the time.
Got a check engine light and checked the codes and got “cylinder 4 misfire”, I decided that it was probably a bad injector, got a new one and it didn’t solve the problem.
The problem occurs completely random, hot/cold engine, hot/cold outside, rain/clear weather.
Example:
Out cruising at steady 80km/h (can be any speed) car is running great without problems, suddenly it’s like someone hit a switch and the cars start jumping/going really rough, if I let go of the throttle completely it stops, if I press it full it works fine so the problem is only on low throttle. Then it can go rough like this for as long as it likes and suddenly it finally turns back to normal like nothing ever happened.
Anyone have any idea of what can cause this sort of problem?
The car is a old taxi so it’s a high mileage car at 330.000km.




That should answer important dilemma.
I heard lot of good things about OM654 engine, but we poor folks in America can't have it, so keep us posted how the engine performs?
Thanks for the advice tho, I’m going to see if there’s someone willing to do a smooth running test for me.
Anyone know if a egr failure would cause a problem like this? I don’t have any fault codes but I figured if the valve stuck open it would probably feel like this.
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But intake build up would not cost single cylinder repeated misfire.
if you don't have record of this work done, I would give it a shot.. valves can also be caked up which could cause a misfire potentially..




There is no exact reason for what causing the problem with OM654, but one of possible reasons is that there is not enough oil in upper section in engine. But for me, personally, it's because of the long service interval by book (25 000 km/1 year) which is too high for this small engine. And the other reason is the oil which is used, MB recommend by BeVo 229.52, 229.61 and 229.71. Mostly in dealerships, they put 229.52 SAE 5w30, which is old and not so thin for this car, but it's recommended by Mercedes... On my way, i change oil every 13-15 000 km or 1 year ( For 1 year i usually make 15-17 000 km, so it's on time for both indicators) and i put only SAE 0w30, 229.61 oil.
Last edited by Klimfilt; Aug 4, 2021 at 03:36 AM.




OM651 in US Sprinters have 20,000 miles (32,000km) oil change intervals and some of them have over 600,000 miles (1 milion km) on them, although Sprinters have much bigger oil pans.
Thanks for heads up on OM654 issues.
In probably 5 years I will want to update my fleet, so if that engine will make it to USA by then, it will be on top of my list.
The picture is small, so can't see what this is about?
I am not sure your problem is cause by DPF regeneration or not.
In my car, it will do DPF regeneration around 350 km.
When system decide to do DPF regeneration, in engine idle mode (D gear + speed 0 + break), the Instantaneous fuel consumption will jump from 1.0~1.5 L/KM to 3.0~3.5 L/KM.
Enter P gear, it will drop to 2.5L/KM.
After around idle 5 minutes, it will drop to 0.9L/KM
And If I drive at low speed in the city, the engine is just like what I switch to sport mode.
The feeling is very different when the DPF is not doing regeneration.
But if the DPF regeneration is at high speed on the high way, the feeling is very small but the total fuel consumption will become very bad around 10KM/L.
Then, every thing will back to normal when system leave DPF regeneration mode.
Maybe you can check the bad feeling is come from DPF regeneration or not.
Best regards,
Albert




I think it’s reasonable to change it every 10k, both from convenience and cost point of view. $70/3 months.. Its good practice to remove covers and peek under to see if anything is leaking, etc..
Earlier this year, I removed covers to find an oily mess. Oil filter housing started leaking.
The only downside to changing it “early” is from an environmental perspective.
I guess if the oil analysis shows something scary, you have time to trade the car in.




I guess my point is what will you do with the data.
If it shows all values are in order, maintain recommended interval at 10k miles.
If some numbers are OOT, increase change interval or possibly get rid of car if they are catastrophic such as bearing wear etc..
I am at 270k km right now on 2012 e class, OM642 with no oil burning or chain rattle..
If there is a remote chance that more frequent oil changes will continue this “good streak” I don’t mind spending an hour and $70 every 4 months.
If I planned to keep the car a few years and dump it, I would maybe think differently, but the fact that diesels are extinct makes me want to keep it as long as possible.



