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Miles.ozz



Member Since: 29 Mar 2018
Location: uk
Posts: 3

2007 Defender 110 Puma 2.4 SW Barolo Black
High Oil Pressure
Hi there. I wonder if anyone can help with my high oil pressure problem. Confused

I have a 2007 2.4 tdci puma in my landy and it has extremely high oil pressure making it smoke like crazy. The smoke stops when the oil dipstick is removed so it seems the pressure is forcing the oil above the seals in the turbo directly into the exhaust. The engine doesn't have an oil pressure relief valve and I wonder if anyone knows if there's an aftermarket part I can get to overcome the problem.

I've got through a couple of turbos and it's now undriveable due to the smoke emissions but the engine sounds great. Any help or advice will be really appreciated.
Post #696923 29th Mar 2018 10:20am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16809

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Sounds like excessive crankcase pressure rather than oil pressure if removing the dipstick makes a difference (removing the dipstick cannot affect the oil pressure).

The bad news about this is that it probably indicates worn or damaged bores or pistons/rings.
Post #696933 29th Mar 2018 11:33am
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BenB8man



Member Since: 22 Mar 2017
Location: Norfolk
Posts: 427

United Kingdom 2010 Defender 110 Puma 2.4 DCPU Stornoway Grey
Yeah its certainly a crankcase pressure issue if the dipstick lets the pressure out. Have you checked the PCV system? You could have a blockage as there is always meant to be a small amount of blow-by past the pistons into the crankcase.
Post #696953 29th Mar 2018 12:45pm
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Miles.ozz



Member Since: 29 Mar 2018
Location: uk
Posts: 3

2007 Defender 110 Puma 2.4 SW Barolo Black
Thanks very much. Rebuilt the engine fairly recently and assumed all else was ok as it ran fine for the first few hundred miles. I'll certainly have a look at it now though. Could save me a fortune in a new engine.
Post #696973 29th Mar 2018 2:59pm
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BenB8man



Member Since: 22 Mar 2017
Location: Norfolk
Posts: 427

United Kingdom 2010 Defender 110 Puma 2.4 DCPU Stornoway Grey
Not completely sure about the Defender TDCI, but on other diesels I've worked on, it's usually the pipework leading from the cam cover to the fresh air inlet as it's under slight vacuum when running.
Post #696977 29th Mar 2018 3:23pm
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LR90XS2011



Member Since: 05 Apr 2011
Location: bickenhill
Posts: 3602

United Kingdom 2011 Defender 90 Puma 2.4 XS CSW Galway Green
as Ben said, looking from the front of the engine, towards the rear drivers side of the rocker cover is a rubber pipe that runs towards the air filter to turbo pipe, check this pipe is clear.

this pipe takes the crank case gases into the engine to be combusted.

if the pipe is clear and removing the filler cap with the engine running shows lots of misty crank case gases escaping you need to look for a reason why, generally it wont be good news but could be injector seals which isnt too bad, worst case would be cylinder head/gasket, or piston rings.

good luck DEFENDER 90 TDCI XS,

I hope everyone is well and your land rovers make you happy
Post #697054 29th Mar 2018 7:50pm
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puma2010



Member Since: 09 May 2012
Location: glos
Posts: 28

England 2010 Defender 90 Puma 2.4 HT Zermatt Silver
Hi miles, I had the same problem on my 2010 Puma, it turned out to be injector seals, I also took the rocker box off to clean it. I have left a conclusion yesterday explaining what I did, if you want to read it, it is titled oil leak conclusion. I hope you sort it. Thumbs Up
Post #698148 3rd Apr 2018 7:09am
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Miles.ozz



Member Since: 29 Mar 2018
Location: uk
Posts: 3

2007 Defender 110 Puma 2.4 SW Barolo Black
Thanks very much for the advice. The problem appears to have been the breather pipe outlet on the rocker cover. I removed the plastic cover over the breather pipe which revealed a rubber diaphragm which had a weak spring underneath which I stretched back into shape. It appears carbon had sealed the diaphragm to the breather pipe outlet - which meant pressure built up - to produce more carbon to seal further. Problem seems to be resolved. Driven for several hours with no symptoms, so fingers crossed!
Post #698289 3rd Apr 2018 6:07pm
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BenB8man



Member Since: 22 Mar 2017
Location: Norfolk
Posts: 427

United Kingdom 2010 Defender 110 Puma 2.4 DCPU Stornoway Grey
Great news! Thumbs Up

Doing a service on mine this weekend hopefully, so I'll give that a check over just in case.
Post #698291 3rd Apr 2018 6:15pm
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puma2010



Member Since: 09 May 2012
Location: glos
Posts: 28

England 2010 Defender 90 Puma 2.4 HT Zermatt Silver
Good news ,well done. Thumbs Up
Post #699070 6th Apr 2018 8:12pm
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Phil VM2.5



Member Since: 28 Mar 2012
Location: Limelette
Posts: 196

Belgium 2012 Defender 110 Puma 2.2 SW Keswick Green
Hi,
Good news and good to know !

Philippe current : defender 110 sw 2.2 puma 2012 and 230.000km today and
again my Range Rover VM2.5 engine from 1992 and 528.000km today.

One ten 1988 to 1992
1987 BMW GS80
One Ten from 1984 to 1987
One Ten from 1983 to 1984
Serie 3 109 from 1980 to 1983
from 1974 Jeep CJ3B and CJ6
Post #699513 9th Apr 2018 3:46am
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