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Old 15-03-2012, 11:12 PM   #1
fernsantos
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Default AU losing water

I have a fairmont Ghia i6.recently I have to top up the water reservoir every 3-4 days.i can't see any water on the ground after I have been driving and the temperature is normal.
Any help would be great

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Old 16-03-2012, 05:50 PM   #2
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Default Re: AU losing water

Check you're heater tap, its under the inlet manifold. Also check you're motor oil and under the oil filler cap - try and rule out headgasket probs asap.
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Old 16-03-2012, 05:55 PM   #3
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Default Re: AU losing water

Try a new header tank cap, could be pushing a little coolant out when it builds up pressure.
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Old 16-03-2012, 06:45 PM   #4
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Default Re: AU losing water

if you don`t find the problem get the cooling system pressure tested, most decent work shops or radiator places can do it.
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Old 19-03-2012, 04:14 PM   #5
webbiegareth
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Default Re: AU losing water

Ours was like that, couldn't see a leak but it was constantly using coolant... it was the radiator cap. They're only $10, buy one and see if it helps
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Old 19-03-2012, 04:21 PM   #6
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Default Re: AU losing water

I've also had 2 AU's in the past that have done this to me both times a pressure test show the radiator as the problem but the leak was small enough that it wasn't dropping onto the ground.
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Old 19-03-2012, 05:43 PM   #7
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Default Re: AU losing water

Check under the carpet in the passenger footwell your heater core might be leaking
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Old 20-03-2012, 11:58 AM   #8
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Default Re: AU losing water

Quote:
Originally Posted by sbcb
I've also had 2 AU's in the past that have done this to me both times a pressure test show the radiator as the problem but the leak was small enough that it wasn't dropping onto the ground.
Did you see a white mark where it was leaking though? (the evaporated coolant stains?)
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Old 20-03-2012, 04:22 PM   #9
david lee
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Default Re: AU losing water

sbcb is right i had the same problem .top radiator corners leak
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Old 20-03-2012, 06:27 PM   #10
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Default Re: AU losing water

Quote:
Originally Posted by webbiegareth
Did you see a white mark where it was leaking though? (the evaporated coolant stains?)
Once the plastic cover (fan) removed it became more obvious.
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Old 26-03-2012, 01:39 PM   #11
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Default Re: AU losing water

Any luck with finding the leak?

If you're topping up I would guess you might be putting in demineralised or distilled water? You don't want to do this for too long as it will diminish the coolant's anti corrosion agents. I had a minor leak (topup every couple of months) and ended up with a tank that was basically demin only water... after maybe a year or 18 months of this one of the welch plugs rusted through. It was NOT fun to replace them, and I only did one side, so the others could still go at any time.

After that I put in the proper coolant, and I was able to see there were about 4 other minor leaks. Drove me mad for a while, but at least the bright green colour makes it easy to spot the source.
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Old 26-03-2012, 04:35 PM   #12
fernsantos
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Default Re: AU losing water

Hi
Just wanted to give u guys an update the leak was coming from the seal on the thermostat.
It was a very small leak i bought a new radiator cap as well mine was an original one and it failed the presure test.

Thanks for everyones input.
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Old 26-03-2012, 06:35 PM   #13
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Default Re: AU losing water

yeah whenever i do thermostats i do a new gasket and some permatex super blue gasket goo
no water's escapin' from my thermostat housing!
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