C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Coolant leak!

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Old Jan 6, 2003 | 02:51 PM
  #1  
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Drifting
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From: Zagreb, Croatia
Default Coolant leak!

I've noticed a very big coolant leak under the car today.
I've seen a few leaks before but not so much.

I've looked under the car and it seems to be from front side of engine.

I supose it's water pump but I can't see for sure.

Is there any way to be sure?

Could it be something else, head gasket maybe ( hope not )?
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Old Jan 6, 2003 | 03:00 PM
  #2  
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Togo
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From: Glendale, AZ
Default Re: Coolant leak! (Sliding)

it's probably the pump....the best way (that i found) to tell is to warm up the car and get the pump pumping, shut it down, then jack it up and shine a flashlight from the underside.......you should be able to tell right away where it is coming from.
it's no fun to change....took me 10 hours spread across 3 days and a LOT of frustration to change it but i got it done!!!! :smash:
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Old Jan 6, 2003 | 03:01 PM
  #3  
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Storz
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From: Walled Lake MI
Default Re: Coolant leak! (85_togo)

:iagree: Luckily...I guess... mine was the intake manifold gasket..do a search tho there are lots and lots of threads about coolant leaks
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Old Jan 6, 2003 | 03:10 PM
  #4  
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don hall
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From: SANTA CRUZ CA
Default Re: Coolant leak! (Sliding)

Your guess that it is the water pump is probably a good one. Try looking for coolant leaking from the pump area with the engine running, and at operating temperature. You might place a newspaper on the floor, under the water pump, to display any leakage.

If you had a leak in the exhaust head gasket, your operating temperature would be excessive, and your coolant level would drop rapidly.
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Old Jan 6, 2003 | 05:08 PM
  #5  
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From: Zagreb, Croatia
Default Re: Coolant leak! (Oldman)

I know. At first leaking was very little, maybe 1 liter in 2 months.
But today there was at least 1 liter under the car.

And the engine temp was allways fine.

I'll get under the car tomorrow and try to locate the problem.
Thanks for help.
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Old Jan 6, 2003 | 05:53 PM
  #6  
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From: Patterson CA
Default Re: Coolant leak! (Sliding)

Check all the hoses that run coolant. Especially that PITA lower radiator hose where it connects to the engine. :thumbs:
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Old Jan 6, 2003 | 07:05 PM
  #7  
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From: Sun City West Az
Default Re: Coolant leak! (VetBoy89)

If you can drive it, take it to a shop for a pressure test on the cooling system. That should show the location of the leak if you can't find it any other way.
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Old Jan 6, 2003 | 07:17 PM
  #8  
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From: Patterson CA
Default Re: Coolant leak! (VetBoy89)

Oh, you might want to try something like this also:
http://www.autotoolexpress.com/leakfinderkit.html

:cheers:
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Old Jan 6, 2003 | 07:52 PM
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Default Re: Coolant leak! (85_togo)

Thanks, I needed that. I changed my 85's pump last week end. I hadn't turned any serious wrenches in years and really felt numb when it took me three hours to remove the old pump and another five to install the new one and top off the coolant. Maybe I didn't do so bad after all. :D
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