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Identifying crankshaft fault
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Rnclayton
 


Member Since: 13 Apr 2018
Location: Radstock, Bath
Posts: 564

Wales 2006 Discovery 3 TDV6 HSE Auto Santorini BlackDiscovery 3

Just catching up. Mine went to. Crank did not snap, but bent. 111k miles

This thread relates to a recall in Korea.

https://disco3.co.uk/forum/korean-ajdv6-cr...ight=korea

JLR UK have confirmed to me on a number of occasions that they do not know anything about this recall, or what tests can be done. JLR UK are adamant that the only way to know is to strip the engine.

I am still arguing the to$$ with them, just for the fun of it. Mainly because I am 'speaking' to the same person all the time, and they keep on contradicting themselves.
 MY07 Freelander2 SE Santorini Black - Gone
MY10 D4 XS Buckingham Blue
MY06 D3 HSE 
 
Post #206887217th Jul 2019 8:01 am
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TV8383
 


Member Since: 18 Dec 2018
Location: Vasse
Posts: 17

Australia 2013 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

As the owner of an SDV6 and a mechanic I have been watching this subject closely over the last year or 2. I have never seen a snapped crank from this engine in the flesh as they are rarely discussed in Australia for what ever reason but have seen and read about several through forums and facebook and google and I have concluded/speculatively

1. The engines are designed on the limit of emissions/reliability.
a. Lower than normal oil pressure
b. Very optimistic recommended oil and filter change intervals (It wan only 10 or so years ago
where if you didn't change the oil in your diesel every 3-5000 you were a monster!!)
c. Undersized harmonic balancer.
d. Light weight internals

2. Some crank failures are unavoidable - when factors line up during manufacturing such as the block is
machined at the end of a run before machine calibrations and the same with the crank and tolerances
are at opposite ends of the spectrum. I think these are the ones we hear about that fail at silly low
mileage and the rarest and don't necessarily fail in the "famous" spot.

3. The ones I have seen/read about that snap at the fillet between number 2 bigend and number 2
main all seem to have poorly bottom end bearings in particular number 1 main. I theorize
that the clearance created by this accelerated bearing wear for what ever reason (harmonics,
lubrication - oil quality/pressure/quantity/extended intervals/dilution allows the front section of the crank to
move laterally within this clearance, independent from the rear section (2nd main back) exacerbated
by the undersized harmonic balancer, to the point of failure.

Personally I change my oil and filter every 4000 miles with an oil analysis for peace of mind and watch my oil pressure gauge like hawk.

Just my 2 cents
  
Post #20746399th Aug 2019 2:48 am
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Naks
 


Member Since: 12 Jul 2010
Location: Stellenbosch, Republic of the Western Cape
Posts: 756

South Africa 2011 Discovery 4 3.0 SDV6 SE Auto Fuji WhiteDiscovery 4

here's a link to a lot more failures: https://www.4x4community.co.za/forum/showt...re-Reports
 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: http://bit.ly/22l8YHh
Range Rover/Sport L320/L322/L494 Workshop Manual: http://bit.ly/2iH7jgG 
 
Post #20746529th Aug 2019 7:11 am
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8043

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

No response from Del yet! he must have run out of data Whistle
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #20746639th Aug 2019 8:45 am
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T3Jn
 


Member Since: 15 Aug 2011
Location: Windsor
Posts: 68

2010 Discovery 4 3.0 TDV6 HSE Auto Santorini BlackDiscovery 4

65k Miles here and its snapped - Disco 4, a couple of days out of manufacturers warranty, have the extended LR but not covered by that apparently... waiting to see what happens.
  
Post #207575613th Aug 2019 2:19 pm
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Surfrider
 


Member Since: 20 Sep 2019
Location: Buckinghamshire
Posts: 63

United Kingdom 2016 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

Just spent north of 30k on a new (to me) D4 with only 13k miles. I was planning on keeping this truck as long as the wheels didn't fall off. This thread is frightening as F. I bought from a LR West London dealer as approved used. Reading here that if it snaps a crank, they won't cover it!??

This seems insane.
 2016 D4 HSE Lux  
Post #208602722nd Sep 2019 5:59 pm
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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

Forum member DG will surely be along in a minute to tell you not to worry !

It IS a low number of cars affected (DG to provide link to prove LR engine faults are not the worst that warranty companies recognise).

And you've probably bought the best a;ll-rounder vehicle you could (DG will be along to tell you how much better the D5 is )

Welcome aboard ... just drive it and enjoy !
 .


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 #208603122nd Sep 2019 6:08 pm
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DG
Site Moderator 


Member Since: 12 Dec 2005
Location: The Gaff
Posts: 50930

Wales 

Glad my messages are finally getting through, H17 Whistle Laughing
 21 year LR veteran > D2 GS 2003 > D3 S 2006 > D3 HSE 2009 > D4 HSE 2013 > D4 HSE 2015 > D5 HSE 2018 > DS HSE R-Dynamic P300e 2021  
Post #208603522nd Sep 2019 6:19 pm
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NJSS
 


Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10464

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Waitomo GreyDiscovery 4

TV8383

Quote:
I change my oil and filter every 4000 miles with an oil analysis for peace of mind and watch my oil pressure gauge like hawk.


I change mine every 6k miles. But please tell us more about your oil pressure gauge. I would like to fit one, with an audible warning of low pressure.

NJSS
 Am I Gammon or Woke ? - I neither know nor care.

2016 Discovery 4 Landmark
2011 Mercedes Benz SL350 (R230)
1973 MG B GT V8 - 3.9L John Eales engine, 5 speed R380 gearbox, since 1975.
1959 MGA roadster - 1.9L Peter Burgess Engine - 5 speed gearbox
Past LRs - Multiple FFRs, Discos & a Series I - some petrol, some diesel,
none Electric or H2 fuel cell - yet.
There are 10 types of people in this world: Those who understand binary, and those who don’t. 
 
Post #208604022nd Sep 2019 6:35 pm
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knwatkins
 


Member Since: 19 Sep 2018
Location: Poole, Dorset
Posts: 716

United Kingdom 

Same here. I'd like to hide one under the dash ideally to maintain a stock look but with an audible warning if it hits a preset threshold.
 Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey 
 
Post #208608122nd Sep 2019 8:17 pm
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OvalAutos
 


Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382

United Kingdom 
Snapped cranks

Hi Guys,

Don't forget we're running a sweepstake on the number of snapped cranks we see this year.

https://www.disco3.co.uk/forum/snapped-cra...78012.html

Kevin and Richard, don't go blabbing about the number you saw under my bench please Rolling with laughter

And as to them snapping in the same place, not true.

https://www.disco3.co.uk/forum/unusual-snapped-crank-179147.html
 Joe  
Post #208621323rd Sep 2019 10:24 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

Looking back at your previous post, you mention there maybe a correlation between faulty injectors and knackered engines (failed big ends / cranks etc)

Is there anyway to check the injectors on the D4 or monitor them for correct operations? Ive seen on the IID that the D3 did have some sort of live values for it, but it seems to be not available on the D4?
 

Current: D4 HSE
Previous: BMW Z4M Coupe
Previous: Land Rover Defender 90 CSW Td5
Previous: Land Rover Discovery Td5 ES 
 
Post #208622423rd Sep 2019 10:54 am
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knwatkins
 


Member Since: 19 Sep 2018
Location: Poole, Dorset
Posts: 716

United Kingdom 

I think the only way is to send them off for testing Rob.
 Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey 
 
Post #208622723rd Sep 2019 10:58 am
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CheshireDan
 


Member Since: 20 Jan 2019
Location: Sandbach
Posts: 239

United Kingdom 2016 Discovery 4 3.0 SDV6 Landmark LE Auto Santorini BlackDiscovery 4

Posted this in the General Discussion area as well but, this is from the Discovery 3 & 4 Owners Group Facebook group:

"A BBC consumer programme would like to speak to Land Rover owners who believe they have experienced crankshaft failure. If you’d be happy to let them contact you, please could you email anna.hodges03@bbc.co.uk within the next two days."

knwatkins, not sure if you want to share to the Range Rover Sport forum and groups as well?
  
Post #208626323rd Sep 2019 12:45 pm
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knwatkins
 


Member Since: 19 Sep 2018
Location: Poole, Dorset
Posts: 716

United Kingdom 

I will do, thanks Dan.
 Kev

MY2014 L405 RR Vogue SE 4.4 SDV8 in Corris Grey
MY2010 L320 RRS HSE 3.0 TDV6 in Stornoway Grey 
 
Post #208626823rd Sep 2019 1:16 pm
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