 | Home > Puma (Tdci) > High Oil Pressure |
 
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17382   
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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. |
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29th Mar 2018 11:33am |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429
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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.
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29th Mar 2018 12:45pm |
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| Miles.ozz Member Since: 29 Mar 2018 Location: uk Posts: 3 
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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.
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29th Mar 2018 2:59pm |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429
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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.
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29th Mar 2018 3:23pm |
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| LR90XS2011 Member Since: 05 Apr 2011 Location: bickenhill Posts: 3641 
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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 |
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29th Mar 2018 7:50pm |
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| puma2010 Member Since: 09 May 2012 Location: glos Posts: 28  
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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.
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3rd Apr 2018 7:09am |
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| Miles.ozz Member Since: 29 Mar 2018 Location: uk Posts: 3
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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!
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3rd Apr 2018 6:07pm |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429
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Great news!
Doing a service on mine this weekend hopefully, so I'll give that a check over just in case. |
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3rd Apr 2018 6:15pm |
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| puma2010 Member Since: 09 May 2012 Location: glos Posts: 28
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Good news ,well done.
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6th Apr 2018 8:12pm |
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| Phil VM2.5 Member Since: 28 Mar 2012 Location: Limelette Posts: 196  
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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 |
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9th Apr 2018 3:46am |
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