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DISCO3.CO.UK > My Discovery 3

Fuel in my expansion tank

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Bessie1

Member Since: 01 Dec 2020
Location: LIVERPOOL
Posts: 4

2008 Discovery 3 TDV6 Commercial Auto Indus Silver

Fuel in my expansion tank

Hi guys bought a lr3 about 5 weeks ago commercial one and it didn't start up put a new battery on started up after 5 ten mins with a bit of messing about took it for a run and got 10 mins into the run and it's started like it was missing opened the bonnet and the water cooling assembly was leaking so had it recovered back home got a new part and had fitted now the problem I have is I am getting a lot of fuel in my expansion tank and been told it could be a number of things fuel cooler under the water assembly unit or fuel filter or head gasket any thoughts guys

1st Dec 2020 2:18 pm

Flack

Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6308

2007 Discovery 3 TDV6 XS Auto Stornoway Grey

Sounds like your fuel cooler under the driver's side might be leaking, are you sure its fuel in the system.? I would have thought if it was the head gasket, it would have over heating problems as well.

Flack

1st Dec 2020 3:38 pm

Bessie1

Member Since: 01 Dec 2020
Location: LIVERPOOL
Posts: 4

Hi mate it's not overheating to be honest but it's defo fuel in the expansion tank a few people said its fuel filter or fuel cooler broken down and mixing but can't understand why so much fuel is getting into expansion tank or header for radiator

1st Dec 2020 3:42 pm

11891952

Member Since: 11 Jul 2020
Location: Pulborough
Posts: 83

2006 Discovery 3 TDV6 SE Manual Zermatt Silver

When you say the water cooling assembly, is that the oil filter cooler assembly in the vee? This one,

If that has failed, it's likely put a fair amount of oil in the cooling system which would take a lot of flushing out.

2nd Dec 2020 8:40 am

Flack

Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6308

Look at this Topic.. Your picture is the fuel cooled Oil cooler.

https://www.disco3.co.uk/forum/topic177650.html

https://www.ebay.co.uk/i/233452116848?chn=...ZaEALw_wcB

Flack

2nd Dec 2020 9:20 am

Bessie1

Member Since: 01 Dec 2020
Location: LIVERPOOL
Posts: 4

11891952 wrote:
When you say the water cooling assembly, is that the oil filter cooler assembly in the vee? This one,

If that has failed, it's likely put a fair amount of oil in the cooling system which would take a lot of flushing out.

2nd Dec 2020 11:11 am

Bessie1

Member Since: 01 Dec 2020
Location: LIVERPOOL
Posts: 4

No it's not that one it's on the top of the engine where it sits on top of the fuel cooler

2nd Dec 2020 11:12 am

BrokenLr3

Member Since: 10 Feb 2024
Location: Leeds
Posts: 3

2006 Discovery 3 TDV6 Landmark LE Auto Barolo Black

Hiya mate .. did you get to bottom of this ? Mines started doing it .. I've replaced the cooler that's underneath the drivers side and it's still pumping fuel into the coolant system . Was thinking the next thing would be the oil cooler that's in the middle of the V top of the engine that the oil filter screws into.. but I don't want to mess about with it as I'm not sure fuel goes into that ? So wondered if you'd remedied the problem... cheers

10th Feb 2024 12:33 pm

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