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Coolant boiling out my Reservoir-Please help.

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Old 08-26-2006, 04:40 PM
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Default Coolant boiling out my Reservoir-Please help.

My upper radiator hose is hot. Bottom is cool.
Replaced thermostat, coolant sensor, radiator cap.
What is causing this?
It doesnt take long before my reservoir over fills and boils over.
Old 08-26-2006, 04:53 PM
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Default Re: Coolant boiling out my Reservoir-Please help. (CDteggy)

any suggestions?
Old 08-26-2006, 05:20 PM
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Default Re: Coolant boiling out my Reservoir-Please help. (CDteggy)

the top should be hotter than the bottom, but i think in your case you're saying that the bottom isn't getting warm at all? if you just replaced the thermo then all i could think of is a flow problem...blockage in the radiator, or somewhere else, or the super rare broken water pump. i wouldn't count on it being the water pump though. either way you've probly overheated your engine pretty badly...that sucks.
Old 08-26-2006, 08:11 PM
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Default

head gasket.
Old 08-26-2006, 08:44 PM
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Default Re: Coolant boiling out my Reservoir-Please help. (CDteggy)

Id say give your radiator a pressure flush with the hose or bring it to a shop and just to be on the safe side check your water pump to see if it may be defetive replacment parts usually go pretty cheap in a j-yard and its not like you need to get brand new parts unless its a seal highly doubted
Old 08-26-2006, 09:01 PM
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Default Re: (robert_v)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by robert_v &raquo;</TD></TR><TR><TD CLASS="quote">head gasket.</TD></TR></TABLE>
Old 08-26-2006, 09:26 PM
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Default Re: (robert_v)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by robert_v &raquo;</TD></TR><TR><TD CLASS="quote">head gasket.</TD></TR></TABLE>
Old 08-26-2006, 10:39 PM
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Default Re: Coolant boiling out my Reservoir-Please help. (CDteggy)

what makes you think its a head gasket?
Old 08-28-2006, 12:25 AM
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Default Re: Coolant boiling out my Reservoir-Please help. (CDteggy)

i dunno headgasket wouldnt really show as a flow problem would it i think he might have a rare occasion of a defective pump
Old 08-30-2006, 12:11 AM
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Default Re: Coolant boiling out my Reservoir-Please help. (CDteggy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CDteggy &raquo;</TD></TR><TR><TD CLASS="quote">what makes you think its a head gasket?</TD></TR></TABLE>

through personal experience. i changed the thermostat and water pump and it still overflow out the reserve coolant tank. so try the head gasket
Old 08-30-2006, 06:31 AM
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Default Re: Coolant boiling out my Reservoir-Please help. (robert_v)

mine did the same thing, the HG was cracked between #2 and #3 cyls. never smoked, would only do as you described.

had another car that did this the radiator was original 1992 and super thin, turns out it was just 13 yrs of build up in the radiator was blocking flow.

I say radiator or Headgasket
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