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SDV6 anxiety
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mikerajjers
 


Member Since: 31 Oct 2020
Location: Trnava
Posts: 2

Slovakia 2015 Discovery 4 3.0 SDV6 HSE Auto Unknown ColourDiscovery 4
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
  
Post #218354631st Oct 2020 9:08 am
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26683

United Kingdom 

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.
  
Post #218356531st Oct 2020 10:38 am
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DrRobH
 


Member Since: 10 Oct 2015
Location: Hampshire
Posts: 924

United Kingdom 

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 
 
Post #218357131st Oct 2020 11:02 am
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

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 👍
   
Post #218357531st Oct 2020 11:32 am
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

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 
 
Post #218359231st Oct 2020 12:56 pm
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Gareth
Site Moderator 


Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26683

United Kingdom 

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.
  
Post #218359431st Oct 2020 1:08 pm
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20713

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

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

TDV8 Retrofit Build Thread 
 
Post #218364831st Oct 2020 4:50 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

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 Whistle

Thks again Thumbs Up
   
Post #218367431st Oct 2020 6:20 pm
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gstuart
 


Member Since: 21 Oct 2016
Location: kent
Posts: 13576

United Kingdom 2005 Discovery 3 TDV6 Base 7 Seat Auto Java BlackDiscovery 3

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
   
Post #218367831st Oct 2020 6:28 pm
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Holmkiern
 


Member Since: 16 Jul 2017
Location: Upphärad,west coast
Posts: 61

Sweden 2011 LR4 3.0 TDV6 HSE Auto Unknown ColourLR4

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.
  
Post #22083336th Feb 2021 10:04 am
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Holmkiern
 


Member Since: 16 Jul 2017
Location: Upphärad,west coast
Posts: 61

Sweden 2011 LR4 3.0 TDV6 HSE Auto Unknown ColourLR4

No input of parts needed/cost?
  
Post #22144151st Mar 2021 7:23 am
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Yargo
 


Member Since: 25 Dec 2020
Location: Europe
Posts: 326

2014 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

Why some 3.0d engines are called gen 1 and some gen 2? Are there two different revisions of sdv6 ?
  
Post #22144181st Mar 2021 7:45 am
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

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 Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #22144191st Mar 2021 7:57 am
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Hardware
 


Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12676

United Kingdom 2011 Discovery 4 3.0 SDV6 XS Auto Sumatra BlackDiscovery 4

Holmkiern wrote:
No input of parts needed/cost?


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 Sad ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms 
 
Post #22144201st Mar 2021 7:59 am
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Yargo
 


Member Since: 25 Dec 2020
Location: Europe
Posts: 326

2014 Discovery 4 3.0 SDV6 HSE Auto Java BlackDiscovery 4

Where these 3.0d were fitted? Jaguar XF I know had it.
  
Post #22144221st Mar 2021 8:02 am
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