Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Valve stem seals replacing
Hello,
Did someone change the valve seals at a 2.7 TDV6 while engine is in the car and cylinder heads are bolted on?
Is this possible?
10th May 2020 4:45 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
In a word no, the head has to come off, but why would you need to change them?
They are one of the few components on the TDV6 to cause an problem!yµ (idµ - eAµ) ψ=mψ
16th May 2020 1:31 am
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
I am looking for the reason why my Disco uses more than 1 liter oil all 1000km. I have a lot of blue smoke when engine is cold and no smoke after 3 km when it is warmed up.
Turbo is new, DPF is out and no oil is dropping on the floor. So I think it could be the valve seals or piston rings.
In the past I changed these seals at a AUDI car with the cylinder head bolted on by connecting compressed air to the cylinders.
16th May 2020 10:08 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Compressed air or string down the injector bore, neither will be a small job.
16th May 2020 10:35 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
Did you check to see if there is any oil in the intercooler? A small amount is acceptable but anything significant would suggest turbo seal failure. The other possibility might be the breather behind the oil filter. It doesnt usually cause problems unless it has been disturbed, but it can be a pig to get out.
If when fully warmed up and no blue smoke, what happens if you let it idle for say 20 mins?yµ (idµ - eAµ) ψ=mψ
16th May 2020 11:31 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Original Borg Warner Turbo is new. This lowered the use of oil from about 1.5 L to 1 Liter on 1000 km.
Intercooler is also new and the hoses are dry since turbo replacement.
Engine is running smooth and comes good on acceleration. Compression is tested and pressure loss test is good.
Idling the engine over 20min I can do the next days, but what can I see with this?
17th May 2020 10:09 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
Given there is no longer oil present on the inlet side from the turbo. If you allow 20 min idling and then blip the throttle, any blue exh smoke could be a strong contender for piston ring failure. Though not exclusively as it remains possible it's a crankcase breather issue.
Personally I have not yet witnessed any valve stem seals failing on a TDV6, but others might be able to share a contrary experience.yµ (idµ - eAµ) ψ=mψ
17th May 2020 10:24 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Sorry I forgot the crankcase breather box with rubber hose is also new.
17th May 2020 10:42 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
So if you're burning 1ltr/1000km is it not obvious in the rear view mirror when blasting down the Autobahn?yµ (idµ - eAµ) ψ=mψ
17th May 2020 10:50 pm
Globetrotter448
Member Since: 21 Mar 2017
Location: Londonderry NSW
Posts: 1782
Possibly EGR's but check exhaust pipes, with that usage it should show as oily pipes or you may have the wrong dip stick
18th May 2020 9:02 am
Oswiperus D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1590
My friends D3 was the same as yours, it was smoking and needed topping up with oil almost every journey.
The turbo was replaced and it was still the same, I thought it may be the valve seals but as already said they do not give trouble.
Turned out to be the oil separator / crankcase breather needed replacing. I was sceptical that it could pass that much oil but it cured it completely. It is behind the oil filter and is difficult to change but not very expensive.Stu
2016 D4 Landmark current
2022 Defender D300 SE Gone
D4 2014 XS Commercial - Gone
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone
D2 1999 TD5 E white - current
18th May 2020 2:53 pm
PROFSR G
Member Since: 06 Mar 2017
Location: Lost
Posts: 4628
I thought this too would be a likely culprit but he says he's changed it!yµ (idµ - eAµ) ψ=mψ
18th May 2020 3:05 pm
Oswiperus D3 Decade
Member Since: 02 Apr 2010
Location: Chelmsford, Essex
Posts: 1590
Ah yes sorry, I missed that. I really must read the whole thread properly! Stu
2016 D4 Landmark current
2022 Defender D300 SE Gone
D4 2014 XS Commercial - Gone
D4 2016 hse lux montalcino red - Gone
D3 2005 se java black - current
D3 2005 base manual - gone
D2 1999 TD5 E white - current
18th May 2020 8:11 pm
wedgev8
Member Since: 17 May 2019
Location: Kerpen
Posts: 181
Yeah, oil separator is new. I installed a new genuine Land Rover part and tested the function also with my mouth.
Important is the fact much blue smoke only when accelerating the engine while cold.
After some km it is warmed up and there is no blue smoke. Only normal lightly black smoke when accelerating very hard. It is a Diesel!
Maybe there is a crack in the plastik inlet manifold in the direction of Air flow. Or sealing between manifold and head is not good. When engine is warm maybe the sealing is better or the crack closes.
20th May 2020 4:58 pm
KostasA
Member Since: 23 Aug 2015
Location: nairobi
Posts: 286
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