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2004 Chevy Blazer Coolant Leak?

Tiny
JOSHUA.SOPER
  • MEMBER
  • 2004 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
I have had a problem with a consistant coolant leak in my blazer. But there is not visible leak. I have had the car pressurized and looked at by 3 differant shops and no one can tell me why i am losing coolant. I had originally thought it was going to need a new headgasket. But my situations seems to be very similar to that of this forum: http://www.2carpros.com/forum/2004-dodge-intrepid--losing-coolant,-but-no-visible-leak.-vt218074.html
His description matched mine completely until he found the pooling under his radiator. My heat does work very well though. I had flushed the radiator myself and added in some stop leak, which seemed to work, but it turns out that now the coolant system is no longer pulling from the reservoir. So I have to continue to check the radiator to fill.
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Wednesday, December 3rd, 2008 AT 12:50 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi:
With the engine cold, remove the rad cap and clean the tube that allows coolant to get to the overflow. Most likely the sealer plugged it. Also, the (very closely) around the entire intake gasket. Many times they will leak and it's hard to see. Finally, if that doesn't help, you can have a die put in the system. You will need a black light to check for leaks. But, if there is one, the leak will glow with the light.

Let me know what you find.

Joe
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Sunday, December 7th, 2008 AT 1:03 AM

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