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Old 16-05-2015   #1
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Doblo 2014 problem

Hello Everyone
I have a Doblo 1.3 16v diesel with only 17k miles on. It is still under its age/mileage for its first service. The van is in limp mode ( engine management light on ) & will start first time but will not rev above 1500 rpm. The other problem is that it seems to have oil back pressure & is blowing smoke out of the exhaust....anyone any ideas why this is happening on such a new low mileage model ? And Fiat should sort this under warranty ?
many thanks in advance
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Old 22-05-2015   #2
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Re: Doblo 2014 problem

Looks like its only me having this problem
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Old 22-05-2015   #3
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Re: Doblo 2014 problem

Quote Originally Posted by Aspire View Post
Looks like its only me having this problem
Hi , and welcome to FF ,

yours is a VERY common engine.., but in a a vehicle seldom asked about on FF,

BASICS;

the Engine light will store a fault code - this fault code can be read and cleared,

oil being forced out isn't good,
BUT could be as simple as a poor hose connection..,

but YES ALL of this is covered by warranty,

Charlie - Oxford
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Old 24-05-2015   #4
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Re: Doblo 2014 problem

Agreed, don't assume that it is the engine about to go pop as there are various other less serious things that could cause this.


It should be covered by Warranty. Let us know what it was once its fixed.
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Last edited by Yobbo; 24-05-2015 at 14:30.
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Old 24-05-2015   #5
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Re: Doblo 2014 problem

You say it is a 2014 model, but not specifically when that year.

This age of vehicle probably has a DPF (Diesel Particulate Filter). These cause a lot of grief on low mileage vehicles, or those that do short journeys.

The particulate filter needs to burn off (incinerate) the trapped particulates, the frequency of which is variable according to use. The engine needs to be warm and running at a steady rate, then the DPF light will start to flash. The engine should not be stopped during this operation.

If the display message tells you to run a manual regenerate, follow the instructions in the handbook. Royal Mail have a lot if issues with this, which is why you will often see them at times, bonnet up, with the engine revving for about 5-10 minutes. They have the instructions easily at hand in the glovebox.

The DPF uses your fuel to do the regeneration. Not sure how or why, but excess fuel is drained into the sump, which can cause the oil level to rise. There is also a possible warning about oil degeneration, when the ECU guesses that the oil is too contaminated with fuel. Usually small fuel amounts would be passed through the breather system to be burned off.

Any of the above ignored, missed or not done, will cause the engine to go into limp mode, hence the refusal to rev. Now it needs to go to the dealer for them to sort, as the manual regeneration won't get it out of limp mode.

Your exhaust smoke is likely to be the excess fuel in the sump. Diesel is not a good lubricant, so a dealer visit asap is recommended.
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Old 14-06-2015   #6
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Re: Doblo 2014 problem

Hi Guys
Thought I would update, after having the Doblo to 2 main agents with no joy..One even said the engine was shot ( ouch) . I knew it was not engine as it ticked over sweet but would not rev up, then it would lock up. Took it to a 3rd main dealer & they have sorted it...It was....drum roll please....A blown turbo It was dumping oil down cylinder 4 & 3...All done now & running sweet again.
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Old 14-06-2015   #7
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Re: Doblo 2014 problem

what area do you live in..,??
I could name 2 who are THAT BAD ,


Charlie - Oxford
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Old 19-06-2015   #8
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Re: Doblo 2014 problem

Quote Originally Posted by Aspire View Post
Hi Guys
Thought I would update, after having the Doblo to 2 main agents with no joy..One even said the engine was shot ( ouch) . I knew it was not engine as it ticked over sweet but would not rev up, then it would lock up. Took it to a 3rd main dealer & they have sorted it...It was....drum roll please....A blown turbo It was dumping oil down cylinder 4 & 3...All done now & running sweet again.


Aspire, although I didn't say it at the time that was one of the things on my list of the likely causes. Turbo's are much better than they used to be but this does still occasionally happen.
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Old 19-06-2015   #9
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Re: Doblo 2014 problem

Years ago there was a theory that if the engine was revved just as it was turned off it would be easier to start the next time. This was, and still is untrue.

With a petrol engine, petrol does not burn unless it is vapour. Chucking unburnt fuel into a cylinder will condense, and will do some or all of the following.
- Wash the oil off the bores, leading to higher than average bore wear for the mileage.
- Drain through to the sump and dilute the oil until evaporated out through the breather as the engine warms up.
- Drown the spark on next startup.

The same applies with a diesel engine, plus, with a turbo (petrol or diesel) you spin the turbo then cut off its oil supply as the engine is turned off. This leads to accelerated wear to the turbo spindle bushes, leading to play and oil escaping past the spindle seals.

With any turbo engine, it should be allowed to idle for a few seconds before turning it off, to allow the turbo to spin down to minimum.

It is possible that yours has suffered due to the above, not necessarily by you, but previous owners may have contributed.
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