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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3346

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
Oil level rising...
Hi all,

well good news the alternator issues seem to have been sorted (for now)
However on doing my pre-start I found that the oil was up near the danger mark.

This is a bit of a shock as I had expected it to have dropped rather than raised having been stood.

Coolant is clear and no signs of snot on the dipstick or oil filler, coolant not over-pressurising so I'm fairly happy its not that.

However it does seem to be a bit down on power, was running a bit hot on test drive. The oil doesn't smell of diesel but its definitely not at the level I had previously run it at.

Part of me is tempted to drain out the excess and run it for a day see where it ends up though I have a horrible feeling that could do a lot of damage.

First thought is the lift pump leaking into the block and then sump, secondly the injectors.

Any tests or checks I can do before I start buying parts?

All the best Thumbs Up Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #879200 17th Jan 2021 8:59pm
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camelman



Member Since: 27 Feb 2013
Location: Peak District
Posts: 3308

United Kingdom 
We had this on one of the Mountain Rescue TD5s. Was a cracked cylinder head and diesel leaking into the sump.
Post #879201 17th Jan 2021 9:01pm
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3346

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
Exactly, which makes me think injectors or lift pump as there is nowhere else it could come from! Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #879204 17th Jan 2021 9:09pm
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htb2



Member Since: 02 Nov 2018
Location: aberdeenshire
Posts: 507

Scotland 
One thing you can check for diesel dilution. Dip dipstick put a drop of oil on some blotting paper. if only oil there you will have a full consistent circle. if diesel dilution in oil you will have a halo round the oil circle.
Post #879207 17th Jan 2021 9:24pm
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camelman



Member Since: 27 Feb 2013
Location: Peak District
Posts: 3308

United Kingdom 
shaggydog wrote:
Exactly, which makes me think injectors or lift pump as there is nowhere else it could come from!


we had a hairline crack in the head , enough to squirt diesel through under pressure Sad


Last edited by camelman on 17th Jan 2021 9:28pm. Edited 1 time in total
Post #879209 17th Jan 2021 9:26pm
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Retroanaconda



Member Since: 04 Jan 2012
Location: Scotland
Posts: 2520

Scotland 
Diesel dilution on Tdis is not common like it is on Td5s.

I would change the oil and then monitor the level over a few hundred miles, see if it moves again.
Post #879211 17th Jan 2021 9:27pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2062

United Kingdom 1984 Defender 90 200 Tdi HT Pennine Grey
Check the length of the dipstick tube. It is a common problem on Defender 200 Tdi, that because the fitting isn't secure, the tube can slide down dipping the dipstick deeper into the oil.
It should be 283mm from the top of the nut to the top of the tube. Any shorter and it'll be reading high.
Mo The Land Rover 90 - Many are called, few are chosen.
Post #879213 17th Jan 2021 9:36pm
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3346

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
Right, some quick tests done!

Dipstick measured the dipstick and its measuring 295mm from top of nut to top of tube which i have a dim and distant memory of doing this previously as it was loose and misreading.


Click image to enlarge


Needed all my extensions and a crows foot but got it tight Thumbs Up


Oil drip test completed


Click image to enlarge


1st drop from the dipstick as removed, then the second was it cleaned, re-inserted and then dripped.

I think it is showing no halo so the plot thickens? Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #879230 17th Jan 2021 10:54pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2062

United Kingdom 1984 Defender 90 200 Tdi HT Pennine Grey
You've over filled it ?
Mo The Land Rover 90 - Many are called, few are chosen.
Post #879301 18th Jan 2021 12:29pm
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jfh



Member Since: 08 Jan 2014
Location: West Coast
Posts: 348

South Africa 2007 Defender 110 300 Tdi SW Chawton White
Oil will float on water, now let's assume that the water and oil didn't mix.
Loosen the sump plug and let a little bit out.

It'll be a little messy but it will be another thing to tick off the list.
Post #879321 18th Jan 2021 2:21pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2062

United Kingdom 1984 Defender 90 200 Tdi HT Pennine Grey
Oil and water in an engine get well mixed and form an oily white emulsion which will be seen under the rocker cover through the oil filler.
Mo The Land Rover 90 - Many are called, few are chosen.
Post #879325 18th Jan 2021 2:30pm
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Marks Landy



Member Since: 09 Feb 2015
Location: Cheshire
Posts: 296

United Kingdom 1985 Defender 90 200 Tdi SW Java Black
Sounds like it’s Engine oil and filter change time..

Ensuring you refill with 6.85 litres regardless of the dipstick.
Post #879328 18th Jan 2021 2:48pm
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jfh



Member Since: 08 Jan 2014
Location: West Coast
Posts: 348

South Africa 2007 Defender 110 300 Tdi SW Chawton White
Mo Murphy wrote:
Oil and water in an engine get well mixed and form an oily white emulsion which will be seen under the rocker cover through the oil filler.
Mo


Yes , I've seen it enough times, that's why I said assume. Nothing surprises me anymore.
Post #879330 18th Jan 2021 2:54pm
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jfh



Member Since: 08 Jan 2014
Location: West Coast
Posts: 348

South Africa 2007 Defender 110 300 Tdi SW Chawton White
I approached it from the wrong side. The question should be: Are you losing water?
Post #879334 18th Jan 2021 3:13pm
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shaggydog



Member Since: 12 Aug 2012
Location: Kent
Posts: 3346

United Kingdom 1991 Defender 110 200 Tdi USW Arles Blue
Hi guys,

Just to update on this, no loss of coolant and no obvious routes of water ingress.

Will drain, refill then keep an eye on it.

Not the best time for this to happen as my other truck is going in for its MOT on Saturday Big Cry Running Restoration Thread http://www.defender2.net/forum/post323197.html#323197

Self confessed mileage hunter Very Happy
Post #880313 23rd Jan 2021 1:07pm
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