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DISCO3.CO.UK > Maintenance & Mods (D3)

Failed MOT on emissions. Injectors maybe?
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Alright I will take your word on that, but is there enough neg pressure to suck oil past the valve stem seals as you claim?  
Post #22221293rd Apr 2021 5:21 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

It doesnt need to suck if the seals are worn oil will run down anyway but this will be helped by the negative manifold pressure and the positive crank case pressure.
Its not even a lot of oil, i have this problem on the wifes BMW X5, drive it staight in for an MOT and it passes the emmisions easily.
leave it ticking over for more than 10mins and it starts to smoke and when you rev it clouds of blue smoke comes out.
Compared to a Discovery its an easy fix but i have no love for this car so it just gets a thicker grade oil and a friendly MOT Andrew

D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE  
Post #22221313rd Apr 2021 5:33 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

That sounds like the classic Common rail injector problem I mentioned earlier on?

Tbh I think you are kind of clutching at straws with the vlave stem seal idea.

I have owned a few cars that have had valve stem seals come adrift and move up the valve stem shaft itself, and they still did not smoke or use oil.  
Post #22222654th Apr 2021 3:56 am
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hugeviking
 


Member Since: 08 Jun 2010
Location: cotswolds
Posts: 1482

United Kingdom 2006 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

No thoughts ref my faulty oil separator comment. Thinking oil not being separated and being drawn into the intake and bring burnt ?

Andi  
Post #22223494th Apr 2021 3:19 pm
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lynalldiscovery
 


Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274

United Kingdom 2006 Discovery 3 TDV6 Metropolis LE Auto Bonatti GreyDiscovery 3

Have you taken any of the intercooler pipes off to check for the presence of oil?

I would assume the garage have at least done this basic check?  
Post #22223584th Apr 2021 4:45 pm
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aja4x4
 


Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459

United Kingdom 2005 Discovery 3 TDV6 SE Auto Zambezi SilverDiscovery 3

hugeviking wrote:
No thoughts ref my faulty oil separator comment. Thinking oil not being separated and being drawn into the intake and bring burnt ?

Andi


A faulty seperator would cause your issue but its normally combined with high oil consumption. Andrew

D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE  
Post #22223684th Apr 2021 5:18 pm
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