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Dtfrith



Member Since: 01 Nov 2014
Location: Manchester
Posts: 76

United Kingdom 
Identifying a leak

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I seem to have found the source of a small leak (one or two drops on the drive over night each day)
Can anyone help with identifying the part.
Post #617406 17th Apr 2017 1:27pm
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steve_c3



Member Since: 30 Apr 2015
Location: Hants
Posts: 171

United Kingdom 2002 Defender 110 Td5 SW Epsom Green
Does it smell of diesel or is it oil? Can't really tell from the pic but could be the fuel pressure regulator. Had a leak on mine but there was a distinct smell of diesel and the under tray was wet with it too. 2002 Defender 110 CSW TD5
Post #617409 17th Apr 2017 1:38pm
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Dtfrith



Member Since: 01 Nov 2014
Location: Manchester
Posts: 76

United Kingdom 
I had presumed it was oil but I will check once I am home at the end of the week and report back.
Post #617414 17th Apr 2017 1:57pm
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ian series 1



Member Since: 17 Nov 2014
Location: south
Posts: 3127

United Kingdom 2008 Defender 90 Puma 2.4 CSW Bonatti Grey
Yep, that will be the pressure regulator.
Common problem on the TD5, but a straightforward fix. Thumbs Up 80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.
Post #617443 17th Apr 2017 4:00pm
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Dtfrith



Member Since: 01 Nov 2014
Location: Manchester
Posts: 76

United Kingdom 
Seems to be too thick for diesel and no smell.
I'm not sure if this is relevant but when I first start and pull away it seems hesitant for the first minute. Foot flat the revs don't pic up then it lurches into life.
Post #620263 28th Apr 2017 8:32pm
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JustFX



Member Since: 10 Nov 2016
Location: Mendip Hills
Posts: 190

United Kingdom 2000 Defender 110 Td5 CSW Coniston Green

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The part highlighted in red is the FPR and is often a common fault for underperforming LR. It keeps the head at a constant pressure, letting excess fuel back to the fuel tank. Diesel doesn't smell like it used to so don't rely on that.

When I did mine I took the opportunity to take off the inlet manifold (on a Disco it makes access easier) and give it a damn good clean.

Don't buy cheap, go LR and get the gasket. There is also a course filter/strainer in there that is worth cleaning at the time. I did hear tales the FPR can be fixed with cheaper part from a VW. 
Post #620321 29th Apr 2017 8:25am
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barbel jim



Member Since: 12 Dec 2012
Location: Northants
Posts: 1410

United Kingdom 2005 Defender 90 Td5 HT Tonga Green
There is the chance the rocker cover gasket is leaking out the half moon on the back facing the bulkhead. This tends to run around the head and onto the lifting eye, and drips down onto the gearbox/starter also. You'll probably find the black intake pipe is covered also. Could be a combination of both Thumbs Up
Post #620322 29th Apr 2017 8:33am
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lightning



Member Since: 23 Apr 2009
Location: High Peak, Derbyshire
Posts: 2158

United Kingdom 
I had a leak in that area and it turned out to be the rocker cover gasket leaking from the half moon rubber part.
Post #620620 30th Apr 2017 8:15pm
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bogwert



Member Since: 02 Sep 2016
Location: Dundee
Posts: 194

Scotland 2003 Defender 90 Td5 CSW Zambezi Silver
We had a similar leak, after a bit of investigation it came from the rocker gasket.

Easy enough to replace. Very Happy Chris

2014 Discovery 4 TDV6 HSE
2003 Defender 90 TD5 CSW
Post #623400 11th May 2017 1:27pm
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huffhuff



Member Since: 05 May 2016
Location: Home Counties
Posts: 379

United Kingdom 2001 Defender 90 Td5 HT Java Black
Ha, I had two leaks - both mentioned above. Half moon on back of rocker cover gasket and the fuel pressure regulator. I bought a kit off eBay to repair the FPR, been fine since and only took half hour ish to carry out. I did it in-between changing oils in the diffs etc..

http://www.ebay.co.uk/itm/170865386720 TD5 Defender 90
Discovery 3 HSE
Post #623414 11th May 2017 1:59pm
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simon67



Member Since: 18 Jun 2015
Location: west sussex
Posts: 569

England 2004 Defender 90 Td5 HT Rutland Red
The lack of oomph could also be the MAF
Post #623426 11th May 2017 2:40pm
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TechnoTurkey



Member Since: 25 Jul 2016
Location: Worcestershire
Posts: 88

2005 Defender 110 Td5 CSW Zambezi Silver
Or the MAP
Post #623427 11th May 2017 2:43pm
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huffhuff



Member Since: 05 May 2016
Location: Home Counties
Posts: 379

United Kingdom 2001 Defender 90 Td5 HT Java Black
Ha. Even weirder, I just had to replace my MAP. Lack of power, really struggling to get to 30mph. Looked at the other possibilities, split hoses, sticky wastegate, split intercooler. Lots of people said the MAP never fails and just needs a clean.

Mine was dead as a dodo.

I have a known working spare I can lend you to see if that solves the problem with the power...

With the MAF you can just unplug it and see if you notice a difference TD5 Defender 90
Discovery 3 HSE
Post #623478 11th May 2017 7:11pm
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