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Mercedes Sprinter White Diesel smoke dpf?
Tuercas viejas
MB Enthusiast
Yes
Any lurking fault can stop regeneration, even a thermostat running too cool!
Its the reason for the health test to avoid comebacks.
I calculate that simple comeback is going to cost my shop $175 minimum in lost revenue just for starters.
Regards T/V
Any lurking fault can stop regeneration, even a thermostat running too cool!
Its the reason for the health test to avoid comebacks.
I calculate that simple comeback is going to cost my shop $175 minimum in lost revenue just for starters.
Regards T/V
Changed intercooler as it failed a smoke test didn't cure the smoking! They've now changed the dpf.. get bus back tomorrow fingers crossed! If this doesn't work I'm guessing I will go down the genuine dpf route and report back.
Right new dpf seems to have fixed the smoke !! But I did get the high oil level light blink a couple of times on the testing run the garage didn't drop the oil so I assumed it was high from the faulty dpf so I've dropped it slightly to compensate. Does the oil pressure rise when a regen is happening anyway Or should i be worried that the new dpf is still filling up the oil ?
Tuercas viejas
MB Enthusiast
Nick
Got your message and I had to wait until I got home to answer your call for help--Busy day!
OK
When the engine gets hot the oil will rise!
For that reason I always set the oil level in the middle of the dipstick, this avoids customer complaints of HI OIL lights blinking at the driver.
On a factory style scanner you can actually see the level in numbers denoting quality of the oil. (usually 2 poor to 7 good!)
Now in your case I would be very suspicious of oil level rises for no reason. (Read Scary)
Since this is your business vehicle would get a sample of the oil and send it out for analysis, do you have a company nearby you that could do that?
If not there is the Oil Lab :-http://www.theoillab.co.uk/
Or even Millar Oils will do that for you.
This is being pro active
Now in the meantime I would for confidence sake alone simply drain the engine oil and change the filter using an approved lube oil to MB229 .52 found in the MB Bevo list.
Now monitor it closely for any rise in levels which denotes two things, either coolant ingress or fuel dilution of the oil in the crankcase.
The latter is of particular concern because this tells me that you have something LIKE a hosing injector or excess fuel getting into the cylinders or crankcase somehow.????
If left for any length of time or duration will cause damage the engine internals. Read expensive.
I suppose I aught to ask the question as to whether the shop who did the DPF change out, pass the whole thing off as good?
If you are still concerned see if you can PM me with your phone number and I will give you a bell!
I am 7 hours behind you but I often call the UK for LR parts around 9,00 am Denver Mountain time.
All the best
Dennis
Tuercas viejas
Got your message and I had to wait until I got home to answer your call for help--Busy day!
OK
When the engine gets hot the oil will rise!
For that reason I always set the oil level in the middle of the dipstick, this avoids customer complaints of HI OIL lights blinking at the driver.
On a factory style scanner you can actually see the level in numbers denoting quality of the oil. (usually 2 poor to 7 good!)
Now in your case I would be very suspicious of oil level rises for no reason. (Read Scary)
Since this is your business vehicle would get a sample of the oil and send it out for analysis, do you have a company nearby you that could do that?
If not there is the Oil Lab :-http://www.theoillab.co.uk/
Or even Millar Oils will do that for you.
This is being pro active
Now in the meantime I would for confidence sake alone simply drain the engine oil and change the filter using an approved lube oil to MB229 .52 found in the MB Bevo list.
Now monitor it closely for any rise in levels which denotes two things, either coolant ingress or fuel dilution of the oil in the crankcase.
The latter is of particular concern because this tells me that you have something LIKE a hosing injector or excess fuel getting into the cylinders or crankcase somehow.????
If left for any length of time or duration will cause damage the engine internals. Read expensive.
I suppose I aught to ask the question as to whether the shop who did the DPF change out, pass the whole thing off as good?
If you are still concerned see if you can PM me with your phone number and I will give you a bell!
I am 7 hours behind you but I often call the UK for LR parts around 9,00 am Denver Mountain time.
All the best
Dennis
Tuercas viejas
Apparently that's what they do when they fail regeneration the excess fuel in the stroke goes back into the sump! I was just wondering that during the regeneration process will the increased backlressure cause the oil level to rise slightly my mobile number is +447977108075 don't mind my number in the public domain as it's my business number
Just an update one of the injectors was not coded in the ecu... I still get the smoking but not on the same frequency had to drive for 300 400 miles! I’m guessing I should get the injectors checked any more guidance from anyone?
Tuercas viejas
MB Enthusiast
Nick Hi
Dennis here
When we last spoke on the phone I mentioned your injectors as being possibly suspect!
You need therefore to Ohm out the injectors as an initial test
Expect to see 185 Kilo Ohms +/- 10%.
Try that first.
Dennis
Tuercas viejas
Dennis here
When we last spoke on the phone I mentioned your injectors as being possibly suspect!
You need therefore to Ohm out the injectors as an initial test
Expect to see 185 Kilo Ohms +/- 10%.
Try that first.
Dennis
Tuercas viejas
I believe they leak tested them but I’ve been informed by the last owner the injectors have never been changed I’m guessing they should be checked as the bus is on 260000 miles can’t believe one wasn’t coded in with the correct number surprised I didn’t have the issues before but I’m guessing a hole in the intercooler would of leaned up a rich mix due to an overactive/worn injector
Tuercas viejas
MB Enthusiast
Well you don't know the history of these injectors they at be suspect for all you know.
Better to overview them before moving forwards
T/V
Better to overview them before moving forwards
T/V
Tuercas viejas
MB Enthusiast
Dennis another question the bus thinks it has more air than it has it. I believe the figure on mb star says the range should be 200-300 but the bus is showing 500? Changed the maf and no difference any ideas ?
You did install a genuine one right and adapt it!(conduct a teach in?)
Do you have any codes?
In any case so I need to see all of the sensors figures in live data in Key On Engine off KOEO.
As a footnote I have a 2008 V6 Sprinter in the shop which smokes at idle when hot! This was simply traced a leaking snail core allowing oil out into the exhaust down pipe.
It can be like a insect fogger when hot!
Might we have multiple faults here?
Dennis
Tuercas Viejas
No codes both Bosch MAF’s .. adapted in at garage reads 500 on the live data even when it’s smoking there is no codes smoking has reduced a lot since the injector was coded in but surely the o2 sensor should pick the poor mix up. all of this started because of a dpf bracket . The exhaust does have a strong diesel smell.. could smell it in the air from a good 10 meters away. I still favour injectors but the garage don't know why it’s reporting more air than it Is getting... I believe 3 mafs have been tested they mentioned putting a resistor in-line on the loom to see if they can bring down the air level to the 200-300 MBStar specifys
Tuercas viejas
MB Enthusiast
Live data sensor read outs are the key!No codes both Bosch MAF’s .. adapted in at garage reads 500 on the live data even when it’s smoking there is no codes smoking has reduced a lot since the injector was coded in but surely the o2 sensor should pick the poor mix up. all of this started because of a dpf bracket . The exhaust does have a strong diesel smell.. could smell it in the air from a good 10 meters away. I still favour injectors but the garage don't know why it’s reporting more air than it Is getting... I believe 3 mafs have been tested they mentioned putting a resistor in-line on the loom to see if they can bring down the air level to the 200-300 MBStar specifys
Dennis
Tuercas viejas
MB Enthusiast
Well first and foremost the MAF sensor controls the EGR valve and the turbo boost control eventually.I’m hoping the garage knows what to look for l. I do not have any diagnostic equipment or I’d post my findings or data.. just wondered if any other sensors are linked to airflow.
Feeding into the mix is the EBP (exhaust back pressure sensor and these all play their part with inputs from the major sensors in the engine!
Without knowing what are the read outs in KOEO it hard to put a definitive finger on it!
All I can tell you is that last week I had a 2007 Sprinter V6 with driveability issues and it turned out to be an aftermarket MAF sensor giving out wrong temp sensor readings after doing live engine data analysis .
Dennis
Tuercas viejas
MB Enthusiast
We;l
Many say that on this side who are out of state !
If you can have a quick nip down the M4 west to Glos & take the M5/A38 north to Quedgeley/Morton Valence I could ask my brother Gordon (Gordon the Engine) to have a look at it for you .
He has a shop giving one on one personal service to owners with troublesome vehicles.
He is more lower key than me!
I employ an army of techs in a 9 bay shop his is UK country life!
Nonetheless well,experienced and capable .
We are in some circles known as the Transatlantic mechanics--"doing" for more than 50 years !
Let me know
Dennis
NickWish you was uk based! I’ve had to deal with this for two months now ! It’s unbelievably frustrating
Many say that on this side who are out of state !
If you can have a quick nip down the M4 west to Glos & take the M5/A38 north to Quedgeley/Morton Valence I could ask my brother Gordon (Gordon the Engine) to have a look at it for you .
He has a shop giving one on one personal service to owners with troublesome vehicles.
He is more lower key than me!
I employ an army of techs in a 9 bay shop his is UK country life!
Nonetheless well,experienced and capable .
We are in some circles known as the Transatlantic mechanics--"doing" for more than 50 years !
Let me know
Dennis
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