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martinfiattech

Member Since: 13 Nov 2013
Location: leicester
Posts: 422

I would also check for any oil leaks aroung the high pressure fuel pump joint to the timming casing and where the water pump mounting gasket joins the cylinder block.
This in turn feeds high pressure oil to the brake vacuum pump.

A good wash off my be needed to fully trace the leak. Excuse the spelling I`am better with spanners and wires.

9th Jul 2014 10:01pm

nickhodgson

Member Since: 08 Dec 2009
Location: Zambia
Posts: 174

Do you have excess crank case pressure?

I have heard of an example of a low mileage 2.4 puma that was blowing oil out of the plastic cover (in the front timing chain cover) and the fault was found to be excess crank case pressure. The engine was blowing a lot when the oil filler cap was removed with the engine running. The car had only been used on frequent short trips and it was though that this cause the rings not to seal correctly due to carbon build up. The solution at the time was a full strip down and clean but I would have tried some magic potion and a good thrashing of the motor...... 1995 300tdi Defender 90 P/UP
2011 Puma Defender 130 D/C
2000 300tdi Defender 110 P/UP
2015 Discovery 4 SDV6 HSE

11th Jul 2014 8:22am

EddieL

Member Since: 07 Jul 2014
Location: S Wales
Posts: 10

2007 Defender 90 Puma 2.4 XS CSW Java Black

That describes it exactly! The car only does short trips and it was again the plastic bung / plate causing the problem. My mate at the garage also mentioned the excessive pressure when he removed the breather pipe.

Can anyone recommend a good magic potion / flush and what is a good run - motorways or just get the revs up for a certain amount of time??

11th Jul 2014 5:58pm

EddieL

Member Since: 07 Jul 2014
Location: S Wales
Posts: 10

Another thought - would the dreaded EGR add to the coking up problem?? Especially with my short trips?

11th Jul 2014 6:15pm

zeerover

Member Since: 11 Jan 2009
Location: Ghent
Posts: 16

2007 Defender 110 Puma 2.4 SW Zermatt Silver

EddieL wrote:
That describes it exactly! The car only does short trips and it was again the plastic bung / plate causing the problem. My mate at the garage also mentioned the excessive pressure when he removed the breather pipe.

Can anyone recommend a good magic potion / flush and what is a good run - motorways or just get the revs up for a certain amount of time??

Injector seals gone.

12th Jul 2014 12:05am

EddieL

Member Since: 07 Jul 2014
Location: S Wales
Posts: 10

Would a failed injector seal cause back pressure? Or are you saying a potential leak from the injector seal?

12th Jul 2014 3:08am

miket

Member Since: 05 Oct 2012
Location: Peak District
Posts: 143

EddieL - did you confirm the cause of your problem?

Cheers

Mike

29th Jul 2014 11:48am

EddieL

Member Since: 07 Jul 2014
Location: S Wales
Posts: 10

It was leaking from the bung again so have sealed it back down and given the engine a good flush through and new oil. To be honest it does very short trips so I can't help feeling it may be to do with this so keeping my fingers crossed!

Cheers

Ed.

29th Jul 2014 8:57pm

HMARR

Member Since: 04 Jun 2013
Location: New Zealand
Posts: 56

I have a leak in my vacuum pump seal (high pressure oil spray on the underside of the bonnet on the passengers side??? ) Can anyone tell me if this is a big/expensive job to fix? Do I need to get it fixed straight away?

30th Jul 2014 12:55am

zeerover

Member Since: 11 Jan 2009
Location: Ghent
Posts: 16

EddieL wrote:
Would a failed injector seal cause back pressure? Or are you saying a potential leak from the injector seal?

Yes they do cause back pressure and oil consumption.

8th Aug 2014 12:17am

Mongolia

Member Since: 23 Jun 2013
Location: Toulouse
Posts: 45

[img]https://www.defender2.net/gallery/albums/userpics/14958/0_200_1235_014712384.jpg[/img]
[quote="EddieL"]I have got my local garage looking at it and it doesn't seem to be vac pump as that looks clean. I would say that doesn't look like high pressure spray more one that is getting onto the various belfs and pulleys and getting chucked around. When viewed from below its all over the front axle and n/s chassis rail. When this last happened it was coming from a plastic blanking plate on the front of the engine (I would call it on the front timing chain / belt cover but my description may be wrong!) and it is looking like it may well be coming from here again???

The truck is at the garage at present so can't do photos but will update if / when this problem is resolved. As always any thoughts great fully received.

Cheers

Ed.[/quote]
May be this part 3 but I dont know how it is fixed?
[img]https://www.defender2.net/gallery/albums/userpics/14958/0_200_1235_014712384.jpg[/img]

8th Aug 2014 9:39am

munch90

Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

EddieL wrote:
It was leaking from the bung again so have sealed it back down and given the engine a good flush through and new oil. To be honest it does very short trips so I can't help feeling it may be to do with this so keeping my fingers crossed!

Cheers

Ed.

if the bung has been out a couple of times , maybe the flat cover is out of shape a bit , we have had to put a small bead of sealer round the seal a few times to get them to seal

8th Aug 2014 9:44am

Mongolia

Member Since: 23 Jun 2013
Location: Toulouse
Posts: 45

I can't include a pic.
So I think there's a leak from the cover fuel pump (LR004639) on the cover cylinder front (LR004403)

8th Aug 2014 9:53am

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