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Loosing Coolant


 
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moonoroof
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Joined: 04 Feb 2007
Posts: 209
Location: IRELAND

PostPosted: Sun Dec 20, 2015 1:56    Post subject: Loosing Coolant Reply with quote

My 3.1 Bighorn has started to do a disappearing trick with the coolant, it's loosing about a litre over 100 miles.
All the hoses are in good condition, as is the thermostat, radiator, water pump etc. Temperature gauge sits bang in the middle with plenty of heat, that is, until the water level drops.It starts in a milli second, with no water in the oil or oil in the water. I've had the system pressure tested to 1.5 bar, with no leaks or pressure loss.
What do you think is going on?

Michael Very Happy
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PostPosted: Sun Dec 20, 2015 1:56    Post subject: Google Ads keep this community free to join!


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Gribble
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Joined: 11 Oct 2007
Posts: 8448
Location: Holset H221W

PostPosted: Sun Dec 20, 2015 12:34    Post subject: Reply with quote

I expect its going out the exhaust so you can't see it and its going to be a heat related thing which is very hard to test for .

Can you get the pressure test done when the cars hot ? might show something .


The cause ? probably head gasket so not a difficult fix.
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moonoroof
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Joined: 04 Feb 2007
Posts: 209
Location: IRELAND

PostPosted: Sun Dec 20, 2015 13:45    Post subject: Reply with quote

Gribble wrote:
I expect its going out the exhaust so you can't see it and its going to be a heat related thing which is very hard to test for .

Can you get the pressure test done when the cars hot ? might show something .


The cause ? probably head gasket so not a difficult fix.


Thanks Gribble. Smile
It was at normal temp. when the test was done and nothing showed up.
I'm going to offer it up for sale soon, so for peace of mind, I suppose I'd better have the head gasket replaced.
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Retro Pedro
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Joined: 04 May 2010
Posts: 242
Location: South East

PostPosted: Sun Dec 20, 2015 21:37    Post subject: Reply with quote

Would one of those chemical sniff test give an indications? One of these:
http://www.eebuygum.co.uk/itm/Leaking-Cylinder-Head-Gasket-Block-Test-Kit-Detects-Exhaust-Gas-in-Radiator-/331718244537?hash=item4d3bf2b8b9:g:y3UAAMXQatBSamF0
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moonoroof
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Joined: 04 Feb 2007
Posts: 209
Location: IRELAND

PostPosted: Mon Dec 21, 2015 1:40    Post subject: Reply with quote

Retro Pedro wrote:
Would one of those chemical sniff test give an indications? One of these:
http://www.eebuygum.co.uk/itm/Leaking-Cylinder-Head-Gasket-Block-Test-Kit-Detects-Exhaust-Gas-in-Radiator-/331718244537?hash=item4d3bf2b8b9:g:y3UAAMXQatBSamF0

At that price, it's worth a try. Very Happy
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moonoroof
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Joined: 04 Feb 2007
Posts: 209
Location: IRELAND

PostPosted: Sat Feb 13, 2016 23:11    Post subject: Reply with quote

[quote="Gribble"]I expect its going out the exhaust so you can't see it and its going to be a heat related thing which is very hard to test for .

Can you get the pressure test done when the cars hot ? might show something .

That's what my Indi thinks,  but he hasn't got a tester.
I can get one on eebuygum, for £50 or so.
Do you know if they're any good?
It's a fantastic vehicle: I want to sell it but I can't, until this is sorted.
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