Member Since: 20 Jan 2019
Location: Lancing
Posts: 1
Coolant Level Dropping
I am losing coolant every time my 05 Disco 3 is driven. I have had it pressure tested and it holds its pressure and no obvious leaks. Any ideas please?
20th Jan 2019 4:43 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Rad cap always first place to start
20th Jan 2019 4:46 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8101
Or with a pressurised system the expansion bottle cap.
How much are you losing?- if you don’t top up does it use more and more or does it always lose the same amount and stops at that level regardless of how often the car is used.
Does the water temperature get higher than normal?
Fill the water expansion tank full and leave the cap off, start the engine and let it run at tick over, watch the expansion bottle for bubbles rising out of the filler, any tiny bubbles visible and you have a cylinder head gasket blown It can when others can't,
It will when others won't,
It goes where others don't.
20th Jan 2019 5:19 pm
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
I have a V8 so the system will be different I'm sure, but I had the same problem. In the end I got a black light pulled the car into a pitch black garage and just went over the front of the car until I found a tiny leak - visible only because I used a black light.
You have a leak from the system somewhere if the cap is OK. I'd get a black light and start investigating. Cheap and you may find it.PAGODA
20th Jan 2019 5:59 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
UV light I assume
20th Jan 2019 7:22 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
EGR coolers.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Pete K wrote:
UV light I assume
Yes.PAGODA
20th Jan 2019 9:53 pm
MattD308
Member Since: 01 Sep 2019
Location: Winchester
Posts: 7
Did you ever find out what the problem was? I’m having exactly the same issue!
1st Sep 2019 10:58 pm
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Try a UV light for starters. (After checking the cap!)PAGODA
2nd Sep 2019 2:43 am
MattD308
Member Since: 01 Sep 2019
Location: Winchester
Posts: 7
Cheers will definitely give that a go see if I can find any leaks. Other than that I have had it pressure tested and replaced the cap. When I changed the cap it seemed to work fine for a bit, then did a 300 mile trip and started again. Even when you leave the car to cool over night if you take the cap off in the morning it releases some pressure!
2nd Sep 2019 9:21 am
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10363
Also check the black plastic between the heads at the front.
The one with 3 pipes of different sizes
2nd Sep 2019 12:02 pm
MattD308
Member Since: 01 Sep 2019
Location: Winchester
Posts: 7
Thanks Pete
Will have a look see what I can see.
2nd Sep 2019 12:47 pm
RogB
Member Since: 15 Jun 2018
Location: Mansfield
Posts: 1651
when it was pressure tested was it hot or cold fluid in the system ?
i had a similar problem with my first Freelander 1... losing coolant but no obvious signs.
Turned out to be a split hose deep in the engine bay, that only leaked when it was hot as the rubber hosing got hot and softened and so allowed the coolant to leak. There was no leak when it was cold.
2nd Sep 2019 1:22 pm
MattD308
Member Since: 01 Sep 2019
Location: Winchester
Posts: 7
Cheers Rog. Think I’m going to have to take it back to the shop. Just can’t see anything obvious. Just done a 6 hour drive and has seemed fine. Loosened the cap a quarter anti clockwise and seems to be helping. Not sure if it was hot or cold when tested though. Just another note temp gauge is alway steady. Never moves at all.
2nd Sep 2019 8:37 pm
JackNorris
Member Since: 06 Jul 2012
Location: Beds/Bucks Border
Posts: 1877
You relying on the car telling you its low or looking yourself ?MY2023 Discovery 5 R-Dynamic 3.0
MY2020 Discovery 5 Landmark 3.0 - SOLD
MY2005 Discovery 3 V8 4.4 HSE - SOLD
MY2019 Discovery 5 SE 3.0 - LR Replaced !
MY2005 Discovery 3 S 2.7 - SOLD
MY2016 Discovery 4 Graphite - SOLD
MY2015 Discovery 4 SE Tech - SOLD
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
