ive read a few reports on this happening due to sump filling up with excess diesel that was intended to regenerate DPF???

 

Oh dear, good job he was insured. I fear this is more common than we think, many tinmes i have been told to 'stay away' by my dealer unles your on the motorway all day

 

2.7 engine has good reputation, like any other diesel if it has a DPF it needs to re-generate. As you probably know needs a decent run, Circa 20 miles, engine needs to be at normal temperature.This is my understanding of what can happen, others will correct me if wrong. For example if a car only does journeys of say 10 miles or less over longish period of time DPF will keep trying & failing to re-generate. Causing diesel oil to pollute engine oil in sump. Should result in service required warning. If Eng. Oil not changed engine damage due to poor lubrication will start. As for engine blowing up, yes I have heard of that believe it's called running on. Happens when sump oil is forced into combustion space due to high sump pressure. Then engine will feed of the sump oil, won't switch off, revs will increase, until engine destroys itself, piston through block Etc. If your quick enough & lucky you may be able to stall it to stop engine.

Let's not get carried away with the scary stuff I have never heard of this happening to a Jag. As an event I believe it is quite rare with any make. How to avoid it? Owners with DPFs will advise you better but, if you drive car until normal operating Temp. Reached, then do approx. 15-20 miles continuous driving at over 40 (Quite motorway best) that will allow re-generation. Best thing check what handbook says. We don't have a DPF but if we did & saw service warning long before due I would treat it as a matter of urgency to get oil/filter changed.


Roger.

 

Going by the lack of response it is not that common.

 

Isn't a pity that Jaguar didn't build in a switch to force a regen when you are ready to do it. Say at the start of a journey when you know you will have time to do it :roll:

 

Going by the lack of response it is not that common.

Virtually never hear of it

Isn't a pity that Jaguar didn't build in a switch to force a regen when you are ready to do it. Say at the start of a journey when you know you will have time to do it

A switch would never be an option as the driver wouldnt know when all the conditions are right to do a regen,the start of a journey isnt the right time to regen as there is more to it than just time eg for passive regen the DPF must be between 250*C - 500*C
For active regen the car monitors driving style,distance driven and exhaust backpressure signals.There is also a mileage trigger in the DPF module which starts the regen if it hasnt been done by the backpressure signals.
If the driver had a switch they might switch on before conditions were right,switch off too early meaning particulates are still left or too late wasting fuel.
Any diesel owners make sure when getting your car serviced the oil is only topped up 1/2 way between the min/max marks due to slight oil dilution during active regen......another saving for us diesel owners every service :wink:

 

Diesel runaway was mentioned as one of the few really serious issues with the diesel engine at the X350 forum held by the JEC at Castle Bromwich last year. I can't remember the details, but as I remember it was related to the turbocharger seals allowing engine oil into the inlet past worn-out oil seals, so the engine actually ran on engine oil, not diesel. I suppose if the oil gets diluted by diesel this will make this syndrome happen more easily. However, there is another path for engine oil/vapour to get into the inlet manifold which is the crankcase breather arrangements. I would have thought bypass of the turbo oil seals a more likely path, but I may be wrong though.

 

Me again !

Described here: -

http://en.wikipedia.org/wiki/Diesel_engine_runaway

 

I have just finished a 3 year stint with a Citroen C6 (Jag 2.7 V6). Engine seized up,smashing a fist size hole on the block. I have some pics of the engine, but don't know how to upload !

I've been advised that the engine had 'possibly' been overfilled at service a week before. Driving "hard" from cold , with too much oil, led to foaming, led to friction, led to meltdown. Led to a mechanical write off of a 4 year old 30k car and me buying a Jag!

Matt

 

A simple oil check would have shown whether the car had too much oil then,first thing to do I would have thought after a service.

 

Yes. I wish I had........but never even thought to. Rest assured I won't be leaving a dealer again, post service before checking. We live and learn !

Matt

 

Dear All

Happy New year. I had a engine light come on just before Christmas but when I restarted the car it went off, I reported it to the dealer and they said they would look at it when I booked in for my mot which was New years eve.

They called me to say that the car had passed and was ready for collection, I asked about the fault and they said they had test drove it and it felt a bit flat and that they suspect it was a air intake issue. They booked it in for 13th January.

Went to collect the car and when I started it, she made the most horrible screeching noise, I said that I didn't like the sound of that, but they didn't seem to worried, well I didn't make to end of the garage driveway felt like I was driving a tractor. Been there ever since new years eve, warranty company (jaguar extended warranty ) called to say that the garage had asked for a new engine and turbo!!!!!!!!!!!!!!!!!

The garage which is a well known brand have been next to useless not keeping me informed of what is happening, and warranty company sending there own engineer to have a look.

Its a late 2015 XJ Portfolio on a MY 2016 and only done 16400 miles!!!!!!!!!!!!! Its in beautiful condition and I even spent the money for a full detail last year and a Nanotech paint job, took all the swirl marks out its gleaming and the water just beads of lovely. Been serviced regularly by main dealers and mileage last year was low as i I didn't dive for about six weeks late summer as I had a back op.

I am concerned that it went in for an MOT n working order and came out with apparently a blown engine and Turbo charger. I have no car to drive and currently using a little white van from work which is as comfortable as riding a camel . When the car was left with them my little seven year daughter and I had to wait an hour for my wife to come and get us as they didn't even enquire if I needed a lift or anything ,they just wanted to get out of the place as it was new years eve, absolutely shocking service

Anyone heard of an engine so new blowing up !!!! bearing in mind it went in fine. Just hope I don't have issues with the extended warranty now

 

... Its a late 2015 XJ Portfolio on a MY 2016 and only done 16400 miles ...

One small point ... this forum is for the XJ 2003 to 2009 ie the X350/358.

You would do far better to post in the X351 forum which covers your model and year.

 

14 Years old, 40.000 miles: That's the problem.

Diesel make sense when driving longer distances, they are not build for commuting to the next supermarket and back, at least since they've got particulate filters and need to regenerate.

But there's more: Some of them need to be cooled down after driving to protect the turbocharger and generally items like turbochargers, intercoolers, high pressure fuel lines, particulate filters, EGR and so forth will start to cost once the car is beyond 120.000 miles.

I drive an average of 18.000 miles a year and had a Diesel Chrysler with a Mercedes power plant before I bought my current petrol Jaguar.

Yes - the fuel consumption was about 20% lower than on my current car.

But the repair bills where horrendous, so was the depreciation. And the repairs started from day one, then under warranty, until the point, where I sold the car as project car with only 120.000 miles on it because the quoted repair costs where higher than the resale value of the repaired car.

As a comparison: I bought my 2003 petrol XJ6 with 70.000 miles on the clock, drove it for another 75.000 miles now and the aggregated repair bills are less than 3,500.-€ (a little more than I spend for the Diesel Chrysler per year!).

 

The mileage on the car in question is very low indeed, 40k for 2006 car. If that is an accumulation of many many micro journeys (as opposed to a small number of long journeys) then highly likely DPF / failed regen related. I'm now doing 8000 miles per year so I now only use premium diesel (Shell V-max etc) never economy or supermarket fuel and I also change oil and oil & air filter twice as often as originally recommended. Keeps the combustion as clean as poss. So far so good at 130k miles. Keep saying i will change to a petrol but my diesel has been really good. Glad this guy was insured for engine failure, didn't even know that was available.

 

Just another small point, but do you realise that this thread was started nearly 8 years ago?