Member Since: 31 Oct 2020
Location: Trnava
Posts: 2
SDV6 anxiety
I have a late 2015 Discovery 4 HSE SDV6 and am looking for information regarding the egine problems that have been reported. Mine has done around 110 thousand km. It hasn't been of particular concern before I saw an L405 in my mate's workshop with a seized crank.
I've looked at this poll and it works out that 18% of D4 owners have had an issue. However, this is only of those who have asnwered and there are probably 1000s of D4 owners who don't even visit forums. So I am taking it with a pinch of salt.
https://disco3.co.uk/forum/d3-tdv6-d4-t-sd...dv6+engine
Anyway, I was wondering if some of you can shed some light on these questions I have? My appologies if it has already been answered elsewhere, in which case please point me to the thread.
1. how many generations of SDV6 engine have there been and what years were they fitted? Any major differences between them?
2. Is any particular type more prone to failure?
3. How does the crank failure manifest itself? Is there a way to tell of impending doom or does it just go 'bang'?
4. What is the most likely cause? I have read it could be an overfueling injector, also oil starvation.
5. Is this really a major problem for a D4? Googling anything makes it seem 10 times worse than it really is.
6. apart from regular and good servicing, is there a way to reduce the risk?
The L405 I saw is Feb 2015 registered and has done 98000km. It has been meticulously serviced and failed due to worn crank shaft bearings. I saw them and they were absolutely destroyed. On the other hand, my mate also has a D3 2.7 TDV6 in the workshop that has been totally neglected...missed oil changes (every 50,000km), recently misfuelled with petrol, on 350,000km and the engine is faultless.
Should I just stop worrying and keep enjoying the D4?
Cheers
Mike
31st Oct 2020 10:08 am
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26702
Yes don’t worry about it. You’ve answered your own concerns really. Yes it can happen, ignore the forum statistics, most people only ever visit a forum when they have a problem. Good servicing and look after it is all you can do.
The one thing I do is check the oil weekly, and let it warm up for a minute before driving. Mine has only ever had specified services, but with quality oil.
My crank is ok so far, but I just had a manifold split, which is another story.
31st Oct 2020 11:38 am
DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 924
I recall Disco Mikey (independent specialist) saying low oil was a factor on many of the snapped cranks he’s seen so check level regularly and maybe change it 6 monthly...Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
31st Oct 2020 12:02 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Gareth wrote:
Yes don’t worry about it. You’ve answered your own concerns really. Yes it can happen, ignore the forum statistics, most people only ever visit a forum when they have a problem. Good servicing and look after it is all you can do.
The one thing I do is check the oil weekly, and let it warm up for a minute before driving. Mine has only ever had specified services, but with quality oil.
My crank is ok so far, but I just had a manifold split, which is another story.
Hi Gareth
Hope this finds u safe well
May i ask out of curiosity please how do u find checking the oil level via the dashboard on the D4 , would u say it’s easy/ accurate plse
Also wonder if a dipstick can be fitted
Many thks 👍
31st Oct 2020 12:32 pm
robpenrose
Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136
It’s easier than lifting the bonnet and checking a dip stick.
No idea how accurate it is though!
Current: D4 HSE
Previous: BMW Z4M Coupe
Previous: Land Rover Defender 90 CSW Td5
Previous: Land Rover Discovery Td5 ES
31st Oct 2020 1:56 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26702
It’s not too much of a pain. Takes a minute before starting. I know the manual says to warm it up and then let it stand, but that is really not feasible for a regular check routine.
There is a way (can’t remember just now) to enable it to measure from cold. Mine does this.
Some have used a flexible rod down the drain tube, but never tried it.
I check mine in the same place on the drive, to take any variance due to slopes out of the reading.
31st Oct 2020 2:08 pm
Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20732
Despite all you hear about them, out of all the 3.0 D4/RRS/405/494's we look after, we have not had a single crank or bearing failure...My D3 Build Thread
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
Gareth wrote:
It’s not too much of a pain. Takes a minute before starting. I know the manual says to warm it up and then let it stand, but that is really not feasible for a regular check routine.
There is a way (can’t remember just now) to enable it to measure from cold. Mine does this.
Some have used a flexible rod down the drain tube, but never tried it.
I check mine in the same place on the drive, to take any variance due to slopes out of the reading.
Many thks and saw something on here about the drain tube , alas didn’t realise a flexible rod could be used as I wondered how it could be checked if the display failed for some reason
Must admit one day would like a petrol V8 , D4 petrol would be nice but believe they don’t do a petrol for the UK market
Sorry I’m rambling again
Thks again
31st Oct 2020 7:20 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13657
robpenrose wrote:
It’s easier than lifting the bonnet and checking a dip stick.
No idea how accurate it is though!
Very true , also looks easier doing an engine oil change by syphoning it out
must admit and don’t know if it’s just me but really struggle doing an engine filter, with the tubes etc in the way along with having to stretch over the engine
31st Oct 2020 7:28 pm
Holmkiern
Member Since: 16 Jul 2017
Location: Upphärad,west coast
Posts: 61
Hi,
Thanks for good input but noidea what cause the problem?
Adding one more question just in case:
If crank goes,what parts will be destroyed? Just interested to see if it make sense to repair it or part cost is too high. Aiming to fix it by myself in case it happens.
6th Feb 2021 11:04 am
Holmkiern
Member Since: 16 Jul 2017
Location: Upphärad,west coast
Posts: 61
No input of parts needed/cost?
1st Mar 2021 8:23 am
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
Why some 3.0d engines are called gen 1 and some gen 2? Are there two different revisions of sdv6 ?
Suspect that's pre-adblu vs adblu but I'm sure someone will be along to confirm/ deny that soon..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
Buy a jag to use as donor, fit engine then sell rest of jag to recover some costs..
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
1st Mar 2021 8:59 am
Yargo
Member Since: 25 Dec 2020
Location: Europe
Posts: 326
Where these 3.0d were fitted? Jaguar XF I know had it.
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