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BigAl
P4
Joined: 06 May 2003
Posts: 2996
Location: U.K Surrey
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 Posted: Mon Jan 18, 2010 9:38 am Post subject: Header tank coolent level |
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Hey guys, i just noticed the other day that my coolent level was close to the top of the header tank when hot, there is pressure in the system.
Does this mean the cap is leaking and allowing the water to expand or something else?
The level is correct when cold
Thanks
Alan
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x2 33 16v
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eagle3
Alfa 33
Joined: 11 Nov 2007
Posts: 402
Location: France
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| Posted: Mon Jan 18, 2010 1:38 pm Post subject: |
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That sounds like normal behaviour.
They call them expansion tanks for that reason.
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Alfa33 QO 1984
Alfa33 1.3i.e. 1994 |
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BigAl
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Location: U.K Surrey
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BigAl
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Location: U.K Surrey
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eagle3
Alfa 33
Joined: 11 Nov 2007
Posts: 402
Location: France
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| Posted: Mon Jan 18, 2010 2:23 pm Post subject: |
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Is it getting hotter than normal? Is the radiator getting hot? Just wondering whether the thermostat is jammed almost shut.
Make sure the return pipe to the heater and the red overflow pipe is clear. Also check the cap on the tank. It should open under highish pressure and let off steam through the red pipe in theory.
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BigAl
P4
Joined: 06 May 2003
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Location: U.K Surrey
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| Posted: Mon Jan 18, 2010 6:04 pm Post subject: |
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New thermostat, not too long ago.
running temp is normal, rad is hot, in car heat hot, both pipes are warm/hot and under pressure.
The first thing i did was take off the pipe and blow it lol. when pipes are squeezed water flows.
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BigAl
P4
Joined: 06 May 2003
Posts: 2996
Location: U.K Surrey
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| Posted: Wed May 26, 2010 1:07 pm Post subject: |
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Upon further investigation I found that 2 jubilee clips needed to be tightened and I think that the cap was not on at tight as it should have been.
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