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Old 09-08-2012   #1
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Unhappy Diesel in oil sump 1.3 multijet.

Firstly, sorry for the long post...
Our Doblo 1.3 Multijet was recovered to our local garage after rising oil level as a result of diesel entering the oil system somehow. There is also a major oil leak from behing the timing chain cover.
The car did have a DPF fitted, but this was removed and coded out of the ECU.
Local garage (normally excellent) can't fix it as they think it is injectors leaking and are recommending a diesel specialist who are apparently very expensive.
My question is does anybody have any idea as to approximate costs involved in this kind of repair?
The car looks great but the engine is becoming a nightmare and we are now considering the merits of scrapping the vehicle as there is no way we could trade it in at the moment (scared to drive it in case the engine does a runaway).
Any advice/opinions would be really appreciated.
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Old 09-08-2012   #2
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Re: Diesel in oil sump 1.3 multijet.

Quick update - the oil leak is the crankshaft oil seal which we are getting repaired locally just to stop oil pouring out the car.
Still looking for any ideas as to the diesel entering the sump and likely prices involved?
Thanks.
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Old 09-08-2012   #3
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Re: Diesel in oil sump 1.3 multijet.

This sort of thing is usually caused by injector seals that are on their way out. Another cause on some makes of car can be the pump drive end seal failing and diesel leaking into the block, but thats pretty rare. Yet another cause is piston ring wear or failure leading to low compression on that cylinder and incomplete combustion. That causes bore wash which accentuates the wear and then the sump starts to fill with Derv. It could be any one of these things. You must have noticed smoke or uneven cold running with these things for a while ? Compressions, injectors and pump all need a look.

If your engine does a runaway then that is usually caused by turbo oil seal failure. I drove a Renault that did this. The only way to stop the engine was to stall it.
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Last edited by Yobbo; 09-08-2012 at 23:35.
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Old 10-08-2012   #4
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Re: Diesel in oil sump 1.3 multijet.

To be honest, I had noticed a slight misfire when the engine was cold but this disappeared after a moments running and has only been present in the last week.
There has been no smoke at all - in fact I am glad the oil leak appeared as it put us on to the fact that the oil was being contaminated with diesel.
The undertray of the car was catching the oil so nothing showed up underneath the car at first, but I could smell diesel when near the car. It was only when dropping the undertray that I discovered what was going on. I check the oil/water etc every week so I know that the oil leak and diesel contamination has happened very recently.
At the moment my other half has lost all confidence in the car and it is looking very much like she is looking to get rid of it.
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Old 11-08-2012   #5
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Re: Diesel in oil sump 1.3 multijet.

Who 'coded out' the injectors from the regeneration process, from what you describe the car is still trying to regenerate.
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Old 11-08-2012   #6
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Re: Diesel in oil sump 1.3 multijet.

Thanks for the reply T14086.
The remap was done by Viezu and was only to remove the DPF.
When checking on Fiatecuscan the DPF clogging level reads 0% as do the regeneration readings.
This had crossed my mind as well about it still regenerating (or trying to) but both my local garage and the AA man (who recovered the car) both thought that this was unlikely as the misfire from cold start pointed to an injector issue?
Maybe they are wrong?
Any help really appreciated as I am collecting the car on Monday from our local garage with the oil leak only fixed.
Is there a DIY method of checking the injectors for instance to pinpoint which one might be at fault as a massive bill from a garage is not a great option at the moment.
Thanks again.
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Old 11-08-2012   #7
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Re: Diesel in oil sump 1.3 multijet.

You need to establish when the injector(s) are at fault this is best done with a spill test however out of interest as you have fiatscan when was last regen (distance) and what are the dpf pressure/temperature readings?
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Old 12-08-2012   #8
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Re: Diesel in oil sump 1.3 multijet.

Quote Originally Posted by T14086 View Post
Who 'coded out' the injectors from the regeneration process, from what you describe the car is still trying to regenerate.
i agreewith T on this alo you can get diesel oil in sump during regen
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Old 19-08-2012   #9
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Question Re: Diesel in oil sump 1.3 multijet.

Thanks again for your replies.
Just back from a break and have only just got round to looking at the car again.
Fiatecuscan is saying the DPF clogging level is 0%, regeneration level 0%, the DPF temperature reading creeps up slowly as the car warms up from cold (the innards were knocked out of the DPF), the last regen took place at 84,000 miles (this was when the remap was done to remove the regen process and the car now has 86,000 miles), oil degredation is at 85% (which I have now reset as the oil was changed last week). Not sure what else to check on the ECU side of things.
When we were away, I disconnected the battery. Since coming back and restarting the car the fault is still there but is not quite as bad.
The misfire is gone, but there is still diesel entering the sump although not as much as before.
Would my first port of call to be suspicious of a leaking/weeping injector - replacing the washers etc would be a cheap first attempt at a fix assuming I can remove the injectors myself. Any tips on this or how to check injector performace using the ecuscan software would really be appreciated.
Thanks for any suggestions.
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Old 19-08-2012   #10
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Re: Diesel in oil sump 1.3 multijet.

Quote Originally Posted by rookie123 View Post
Fiatecuscan is saying the DPF clogging level is 0%, regeneration level 0%, the DPF temperature reading creeps up slowly as the car warms up from cold (the innards were knocked out of the DPF), the last regen took place at 84,000 miles (this was when the remap was done to remove the regen process and the car now has 86,000 miles), oil degredation is at 85% (which I have now reset as the oil was changed last week).
If innards were knocked out the DPF pressure readings would be wrong.
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Old 19-08-2012   #11
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Post Re: Diesel in oil sump 1.3 multijet.

Quote Originally Posted by T14086 View Post
If innards were knocked out the DPF pressure readings would be wrong.
What implications would this have?
The innards were knocked out and the box welded back up (I watched the garage do the job) with all sensors etc re-attached afterwards.
These were then dealt with by the remap which has been fine since January this year when it was done and the car has been fine - except for replacing the EGR valve from which I still have the scars!
Do you think it is more likely to be a DPF/ecu issue or a dodgy injector as my local garage and AA suggest? Is there a "knack" to removing injectors on the 1.3 Multijet as the last time I did that was on an old Izuzu engined Astra many moons ago. I feel old now.
Thanks again T14086 et al for your responses.
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Old 12-06-2013   #12
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Re: Diesel in oil sump 1.3 multijet.

Hi Rookie 123
I am interested to know what has happened to your car, did you have any satisfactory outcome.
I have a similar problem with my 1.3 Family Multijet, see my long winded post, "Engine Failure."

Or basically I am about to remove the DPF 350 after paying main dealer to 510 to fit EGR. Which did a partial cure, I but suspect the car is trying to regen on the short journeys that I do and dumping diesel into the sump, at least half a litre in 94 miles since repair. So my next step was to remove the DPF to prevent regen. Has your vehicle benefitted from doing this??
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Old 01-08-2013   #13
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Re: Diesel in oil sump 1.3 multijet.

hey! did you solve the problem? i have the same problem with my 1.3 grande punto..
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Old 20-02-2014   #14
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Re: Diesel in oil sump 1.3 multijet.

Sounds like my problem as well any news
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Old 20-02-2014   #15
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Re: Diesel in oil sump 1.3 multijet.

Hey! Since my last post, I removed my DPF and had my software changed (it tricks my computer that my dpf is always clean ) and my problem disappeared, and my fuel consumption got better (6,5l/100km urban and 3,8-4l/km extraurban)
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