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Bails17
Novice
Oct 14, 2012, 4:35 PM
Post #1 of 9
(1430 views)
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hey,
Can anyone suggest why my car would keep taking coolant until the radiator is completely full then once driven for a period of time, push all the coolant back out into the overflow bottle and overheat?? Then once the car is turned off the radiator starts re-drawing coolant from the overflow back into the radiator..
any input appreciated..
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Discretesignals
Ultimate Carjunky
/ Moderator
Oct 14, 2012, 4:44 PM
Post #2 of 9
(1422 views)
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Please don't create a duplicate thread on the same subject.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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Discretesignals
Ultimate Carjunky
/ Moderator
Oct 14, 2012, 4:46 PM
Post #3 of 9
(1412 views)
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Unlocked this thread because the other was deleted.
What is the year, make, model, and engine size of your vehicle?
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Oct 14, 2012, 4:47 PM)
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Bails17
Novice
Oct 14, 2012, 4:48 PM
Post #4 of 9
(1403 views)
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No worries.. Was just hoping for a quick resolution with 2 categories.. wont happen again..
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Bails17
Novice
Oct 14, 2012, 4:49 PM
Post #5 of 9
(1401 views)
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93 Subaru Liberty 5 sp 4 cyl man
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Discretesignals
Ultimate Carjunky
/ Moderator
Oct 14, 2012, 4:51 PM
Post #6 of 9
(1390 views)
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If the coolant is boiling from overheating, the pressure will push coolant into the overflow.
If combustion gasses are getting into the coolant system, that can cause excessive pressure in the system also.
Coolant can also be pushed out if the radiator cap is faulty and can't hold pressure.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
(This post was edited by Discretesignals on Oct 14, 2012, 4:52 PM)
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Bails17
Novice
Oct 14, 2012, 4:55 PM
Post #7 of 9
(1383 views)
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Would you rule out Thermostat issue or cracked head even in that case? Oil shows no sign of milkyness.. have had issues in the past 6 months also.. have split 2 previous radiators.. Does this info help narrow down?
cheers
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Discretesignals
Ultimate Carjunky
/ Moderator
Oct 14, 2012, 5:01 PM
Post #8 of 9
(1380 views)
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If the thermostat is stuck closed, that will cause the engine to overheat. Sometimes head gaskets blow through the firing ring and into a coolant port in which you won't have coolant contamination in the engine oil. You could have a cracked head or cylinder wall that can let combustion gasses into the coolant system also.
You need to determine the cause of the overheating problem.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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nickwarner
Veteran
/ Moderator
Oct 14, 2012, 5:54 PM
Post #9 of 9
(1358 views)
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Go to a shop and ask them to test the coolant system for combustion gasses. If they don't know what you're talking about then leave. They obviously don't know what they are doing. A sample of coolant gasses is drawn though a liquid like a water bong. If the liquid changes color gas from combustion is present indicating either a bad head or head gasket.
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