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Disappearing coolant...

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Old Nov 19, 2001 | 04:30 PM
  #1  
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Chris Fowler
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St. Jude Donor '03-'10
Default Disappearing coolant...

I'm continually having to refill the coolant on my car. I've never noticed a leak anywhere and there is never coolant on the garage floor.

No coolant in the oil either that I can tell.

Pretty much means I'm burning off coolant, I'm guessing.

Now...there is a really bad cap on my coolant overflow tank (cracked in several places)...is it possible the water is evaporating from that tank and disappearing? I'd love it if just putting on a new cap would clear up this problem. :D

If not, is there somewhere to start looking to see if and where I might be burning off coolant?
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Old Nov 19, 2001 | 05:17 PM
  #2  
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GaryS
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Default Re: Disappearing coolant... (Chris Fowler '80)

Get your radiator cap tested and replaced, if necessary. If it is good then I would suspect a head gasket that has a small hole in it. Do a compression check to see which one.
Gary
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Old Nov 19, 2001 | 06:12 PM
  #3  
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Default Re: Disappearing coolant... (GaryS)

Where can I get the radiator cap tested?

Do I have to take it to a radiator shop or can it be tested at other places?
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Old Nov 19, 2001 | 06:12 PM
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Default Re: Disappearing coolant... (GaryS)

I'd be surprised if a compression check could pick up the pinhole you probably have in a gasket. Also, I think I read somewhere that certain heads are prone to cracking (around the exhaust ports?); I suppose it's possible that something like that might have happened too.
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Old Nov 19, 2001 | 06:14 PM
  #5  
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Chris Fowler
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Default Re: Disappearing coolant... (Frank75)

Well...the one thing that makes me think it might not be the heads is that it's been doing this since I got the car (in April) and I had the heads completely rebuild in July...
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